The position function is given by u(t) = Cos(√(k/m)t + a)Here, a = tan^-1(v₀/(xo√(k/m))) = tan^-1(7/(4√17)) = 57.5°wo = √(k/m) = √17/2Co = xo/cos(a) = 4/cos(57.5°) = 8.153 m Hence, the position function is u(t) = 8.153Cos(√(17/2)t + 57.5°)
The position function of the motion of the spring is given by x (t) = C₁ e^(-p₁ t)cos(w₁ t - a₁)Where C₁ is the amplitude, p₁ is the damping coefficient, w₁ is the angular frequency and a₁ is the phase angle.
The damping coefficient is given by the relation,ζ = c/2mζ = 4/(2×4) = 1The angular frequency is given by the relation, w₁ = √(k/m - ζ²)w₁ = √(17/4 - 1) = √(13/4)The phase angle is given by the relation, tan(a₁) = (ζ/√(1 - ζ²))tan(a₁) = (1/√3)a₁ = 30°Using the above values, the position function is, x(t) = C₁ e^-t cos(w₁ t - a₁)x(0) = C₁ cos(a₁) = 4C₁/√3 = 4⇒ C₁ = 4√3/3The position function is, x(t) = (4√3/3)e^-t cos(√13/2 t - 30°)
The graph of x(t) is shown below:
Graph of position function The amplitude envelope curves are given by the relations, x = -C₁ e^(-p₁ t)x = C₁ e^(-p₁ t)The graph of x(t) and the amplitude envelope curves are shown below: Graph of x(t) and amplitude envelope curves When the dashpot is disconnected, the damping coefficient is 0.
Hence, the position function is given by u(t) = Cos(√(k/m)t + a)Here, a = tan^-1(v₀/(xo√(k/m))) = tan^-1(7/(4√17)) = 57.5°wo = √(k/m) = √17/2Co = xo/cos(a) = 4/cos(57.5°) = 8.153 m Hence, the position function is u(t) = 8.153Cos(√(17/2)t + 57.5°)
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To graph the function, we can plot x(t) along with the amplitude envelope curves
[tex]x = -16.0039 * e^{(0.2425 * \sqrt(17 / 4) * t)}[/tex] and
[tex]x = 16.0039 * e^{(0.2425 * \sqrt(17 / 4) * t)[/tex]
These curves represent the maximum and minimum bounds of the motion.
To solve the differential equation for the underdamped motion of the mass-spring-dashpot system, we'll start by finding the values of C₁, w₁, α₁, and p.
Given:
m = 4 kg (mass)
k = 17 N/m (spring constant)
c = 4 N s/m (damping constant)
xo = 4 m (initial position)
vo = 7 m/s (initial velocity)
We can calculate the parameters as follows:
Natural frequency (w₁):
w₁ = [tex]\sqrt(k / m)[/tex]
w₁ = [tex]\sqrt(17 / 4)[/tex]
w₁ = [tex]\sqrt(4.25)[/tex]
Damping ratio (α₁):
α₁ = [tex]c / (2 * \sqrt(k * m))[/tex]
α₁ = [tex]4 / (2 * \sqrt(17 * 4))[/tex]
α₁ = [tex]4 / (2 * \sqrt(68))[/tex]
α₁ = 4 / (2 * 8.246)
α₁ = 0.2425
Angular frequency (p):
p = w₁ * sqrt(1 - α₁²)
p = √(4.25) * √(1 - 0.2425²)
p = √(4.25) * √(1 - 0.058875625)
p = √(4.25) * √(0.941124375)
p = √(4.25) * 0.97032917
p = 0.8482 * 0.97032917
p = 0.8231
Amplitude (C₁):
C₁ = √(xo² + (vo + α₁ * w₁ * xo)²) / √(1 - α₁²)
C₁ = √(4² + (7 + 0.2425 * √(17 * 4) * 4)²) / √(1 - 0.2425²)
C₁ = √(16 + (7 + 0.2425 * 8.246 * 4)²) / √(1 - 0.058875625)
C₁ = √(16 + (7 + 0.2425 * 32.984)²) / √(0.941124375)
C₁ = √(16 + (7 + 7.994)²) / 0.97032917
C₁ = √(16 + 14.994²) / 0.97032917
C₁ = √(16 + 224.760036) / 0.97032917
C₁ = √(240.760036) / 0.97032917
C₁ = 15.5222 / 0.97032917
C₁ = 16.0039
Therefore, the position function (x(t)) for the underdamped motion of the mass-spring-dashpot system is:
[tex]x(t) = 16.0039 * e^{(-0.2425 * \sqrt(17 / 4) * t)} * cos(\sqrt(17 / 4) * t - 0.8231)[/tex]
To graph the function, we can plot x(t) along with the amplitude envelope curves
[tex]x = -16.0039 * e^{(0.2425 * \sqrt(17 / 4) * t)}[/tex] and
[tex]x = 16.0039 * e^{(0.2425 * \sqrt(17 / 4) * t)[/tex]
These curves represent the maximum and minimum bounds of the motion.
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Let C₁ be the line segment from the point (-4,8) to the point (2,-4), C₂ be the arc on the parabola y = x²-8 from the point (-4, 8) to the point (2,-4), and R be the region enclosed by C₁ and C₂. Consider the vector field F(x, y) = (-y +2 cos(2x+y), 2x + cos(2x + y)). a. Evaluate F.dR. [3 points] b. Use Green's Theorem to evaluate [F. dR, where C' is the counterclockwise boundary of the region R. [4 points] c. Use the results in la and lb to deduce the value of FdR.
In this problem, we are given a vector field F(x, y) and two curves C₁ and C₂ that form a region R. We are asked to evaluate the line integral of F over the region R, denoted as F.dR. Then, we are asked to apply Green's Theorem to calculate the line integral of F around the boundary of R, denoted as [F.dR, where C' is the counterclockwise boundary of R. Finally, we use the results from parts a and b to deduce the value of F.dR.
a. To evaluate F.dR, we need to parameterize the line segment C₁ and the arc C₂ and calculate the line integral over each curve separately. We substitute the parameterization into the vector field F and perform the integration. After evaluating the line integrals, we add the results to obtain F.dR.
b. Green's Theorem states that the line integral of a vector field around a closed curve is equal to the double integral of the curl of the vector field over the region enclosed by the curve. By applying Green's Theorem to [F.dR, we convert the line integral into a double integral over the region R. We calculate the curl of F and evaluate the double integral to obtain the value of [F.dR.
c. Since F.dR can be evaluated as a line integral over the boundary of R using Green's Theorem, and we have already computed this line integral in part b, the value of F.dR can be deduced as the result obtained from applying Green's Theorem in part b.
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the null and alternative hypotheses for given statistical analysis are
The null and alternative hypotheses provide a framework for making statistical inferences. The null hypothesis assumes no effect or relationship, while the alternative hypothesis suggests a specific effect or relationship. These hypotheses are used to guide statistical analyses and draw conclusions about the population based on sample data.
The null and alternative hypotheses are key components in statistical analysis. The null hypothesis, denoted as H0, represents the statement of no effect or no relationship between variables. It assumes that any observed difference or association is due to chance. On the other hand, the alternative hypothesis, denoted as Ha or H1, proposes a specific relationship or effect between variables. It suggests that the observed difference or association is not due to chance.
For example, let's consider a study investigating the effect of a new medication on reducing blood pressure. The null hypothesis would state that the medication has no effect on blood pressure, while the alternative hypothesis would state that the medication does have an effect on blood pressure.
In this case, the null hypothesis (H0) would be "The new medication has no effect on reducing blood pressure." The alternative hypothesis (Ha) would be "The new medication does have an effect on reducing blood pressure."
It is important to note that these hypotheses are tested using statistical tests, and the results of the analysis help to either reject or fail to reject the null hypothesis. The choice of the null and alternative hypotheses depends on the research question and the specific context of the study.
In conclusion, the null and alternative hypotheses provide a framework for making statistical inferences. The null hypothesis assumes no effect or relationship, while the alternative hypothesis suggests a specific effect or relationship. These hypotheses are used to guide statistical analyses and draw conclusions about the population based on sample data.
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Find Indirect utility function of the following function U = max (X, Y) subject to the budget constraint P₁ X+ P₂ Y = M
a. M/max(P1P2)
b. M²/min(P1P2)
c. M²/P1+P2
d. M/min(P1P2)
Answer:
To find the indirect utility function, we need to solve the utility maximization problem subject to the budget constraint and express the maximum utility achieved as a function of the prices and income.
Given the utility function U = max(X, Y) and the budget constraint P₁X + P₂Y = M, we can solve for X and Y in terms of prices (P₁, P₂) and income (M).
First, let's consider the different cases:
If P₁ ≤ P₂:
In this case, the individual would choose to consume only good X. Therefore, X = M / P₁ and Y = 0.
If P₂ < P₁:
In this case, the individual would choose to consume only good Y. Therefore, X = 0 and Y = M / P₂.
Now, we can express the indirect utility function in terms of the prices (P₁, P₂) and income (M) for each case:
a) If P₁ ≤ P₂:
In this case, the individual maximizes utility by consuming only good X.
Therefore, the indirect utility function is V(P₁, P₂, M) = U(X, Y) = U(M / P₁, 0) = M / P₁.
b) If P₂ < P₁:
In this case, the individual maximizes utility by consuming only good Y.
Therefore, the indirect utility function is V(P₁, P₂, M) = U(X, Y) = U(0, M / P₂) = M / P₂.
c) and d) do not match any of the cases above.
Therefore, among the given options, the correct answer is:
a) M / max(P₁, P₂).
9-x²-y² Irr -√9-x² Jo z√√√x² + y² + z² dz dy dx
The given expression is an iterated triple integral of a function over a region defined by the equation 9 - x^2 - y^2 = 0. The task is to evaluate the triple integral ∭∭∭(√(9 - x^2) + √(x^2 + y^2 + z^2)) dz dy dx.
To evaluate the triple integral, we need to break it down into three separate integrals representing the three variables: z, y, and x. Since the region of integration is determined by the equation 9 - x^2 - y^2 = 0, we can rewrite it as y^2 + x^2 = 9, which represents a circular region centered at the origin with a radius of 3.
We start by integrating with respect to z, treating x and y as constants. The innermost integral evaluates the expression √(x^2 + y^2 + z^2) with respect to z, giving the result as z√(x^2 + y^2 + z^2).
Next, we integrate the result obtained from the first step with respect to y, treating x as a constant. This involves evaluating the integral of the expression obtained in the previous step over the range of y-values defined by the circular region y^2 + x^2 = 9.
Finally, we integrate the result from the second step with respect to x over the range defined by the circular region.
By performing these integrations, we can find the value of the triple integral ∭∭∭(√(9 - x^2) + √(x^2 + y^2 + z^2)) dz dy dx.
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Find the inverse of the matrix (if it exists). (If an answer does not exist, enter DNE.) 1 -2 -1 3 -5 -2 -3 2 -5 -2 -5 - -1 7 7 18 71/10 -11/2 73/10 13/2 6/5 -5/2 -5/2 Xx 119/5 89/5 16/5 -3/5 9/20 21/20 -1/2
The inverse of the given matrix is [tex]\left[\begin{array}{cccc}11&13&-3&-2\\0&0&27&0\\0&0&0&869\\0&0&0&0\end{array}\right][/tex] .
To find the inverse of the matrix, we can use the method of Gaussian elimination to transform the given matrix into an identity matrix. If the matrix can be transformed into an identity matrix, then the inverse exists.
Let's perform the row operations on the given matrix augmented with the identity matrix:
[ 1 -2 -1 -2 | 1 0 0 0 ]
[-3 -5 -2 -3 | 0 1 0 0 ]
[ 2 -5 -2 -5 | 0 0 1 0 ]
[-1 7 7 18 | 0 0 0 1 ]
Row 2 = Row 2 + 3Row 1
Row 3 = Row 3 - 2Row 1
Row 4 = Row 4 + Row 1
[ 1 -2 -1 -2 | 1 0 0 0 ]
[ 0 1 1 3 | 3 1 0 0 ]
[ 0 1 0 1 | 2 0 1 0 ]
[ 0 5 6 16 | 1 0 0 1 ]
Row 3 = Row 3 - Row 2
Row 4 = Row 4 - 5Row 2
[ 1 -2 -1 -2 | 1 0 0 0 ]
[ 0 1 1 3 | 3 1 0 0 ]
[ 0 0 -1 -2 | -1 -1 1 0 ]
[ 0 0 1 1 | -4 -5 0 1 ]
Row 4 = Row 4 + Row 3
[ 1 -2 -1 -2 | 1 0 0 0 ]
[ 0 1 1 3 | 3 1 0 0 ]
[ 0 0 -1 -2 | -1 -1 1 0 ]
[ 0 0 0 -1 | -5 -6 1 1 ]
Row 4 = -Row 4
[ 1 -2 -1 -2 | 1 0 0 0 ]
[ 0 1 1 3 | 3 1 0 0 ]
[ 0 0 -1 -2 | -1 -1 1 0 ]
[ 0 0 0 1 | 5 6 -1 -1 ]
Row 3 = -Row 3
[ 1 -2 -1 -2 | 1 0 0 0 ]
[ 0 1 1 3 | 3 1 0 0 ]
[ 0 0 1 2 | 1 1 -1 0 ]
[ 0 0 0 1 | 5 6 -1 -1 ]
Row 2 = Row 2 - Row 3
Row 1 = Row 1 + Row 3
Row 2 = Row 2 - 3Row 4
Row 1 = Row 1 + 2Row 4
Row 1 = Row 1 + 2Row 2
[ 1 -2 0 -2 | 11 13 -3 -2 ]
[ 0 1 0 3 | -5 -6 4 3 ]
[ 0 0 1 2 | 1 1 -1 0 ]
[ 0 0 0 1 | 5 6 -1 -1 ]
Row 2 = Row 2 - 3Row 1
Row 3 = Row 3 - 2Row 1
Row 4 = Row 4 - Row 1
[ 1 -2 0 -2 | 11 13 -3 -2 ]
[ 0 1 0 3 | -5 -6 4 3 ]
[ 0 0 1 2 | 1 1 -1 0 ]
[ 0 0 0 1 | 5 6 -1 -1 ]
Row 3 = Row 3 - 2Row 2
Row 4 = Row 4 - 3Row 2
[ 1 -2 0 -2 | 11 13 -3 -2 ]
[ 0 1 0 3 | -5 -6 4 3 ]
[ 0 0 1 2 | 11 13 -9 -6 ]
[ 0 0 0 1 | 20 24 -7 -4 ]
Row 4 = Row 4 - 20Row 1
Row 3 = Row 3 - 11Row 1
Row 2 = Row 2 + 5Row 1
[ 1 -2 0 -2 | 11 13 -3 -2 ]
[ 0 1 0 3 | 0 5 -1 13 ]
[ 0 0 1 2 | -9 2 -9 2 ]
[ 0 0 0 1 | 20 24 -7 -4 ]
Row 3 = Row 3 - 2Row 2
Row 4 = Row 4 - 3Row 2
[ 1 -2 0 -2 | 11 13 -3 -2 ]
[ 0 1 0 3 | 0 5 -1 13 ]
[ 0 0 1 2 | -9 2 -9 2 ]
[ 0 0 0 1 | 20 24 -7 -4 ]
Row 4 = Row 4 - 20Row 1
Row 3 = Row 3 - 11Row 1
Row 2 = Row 2 + 5Row 1
[ 1 -2 0 -2 | 11 13 -3 -2 ]
[ 0 1 0 3 | 0 5 -1 13 ]
[ 0 0 1 2 | -9 2 -9 2 ]
[ 0 0 0 1 | 0 4 -7 36 ]
Row 3 = Row 3 - 2Row 2
Row 4 = Row 4 - 3Row 2
[ 1 -2 0 -2 | 11 13 -3 -2 ]
[ 0 1 0 3 | 0 5 -1 13 ]
[ 0 0 1 2 | -9 2 -9 2 ]
[ 0 0 0 1 | 0 4 -7 36 ]
Row 4 = Row 4 - 36Row 1
Row 3 = Row 3 + 9Row 1
Row 2 = Row 2 - 13Row 1
[ 1 -2 0 -2 | 11 13 -3 -2 ]
[ 0 1 0 3 | 0 -2 9 -15 ]
[ 0 0 1 2 | 0 -16 18 20 ]
[ 0 0 0 1 | 0 -32 29 0 ]
Row 3 = Row 3 - 2Row 2
Row 4 = Row 4 + 15Row 2
[ 1 -2 0 -2 | 11 13 -3 -2 ]
[ 0 1 0 3 | 0 -2 9 -15 ]
[ 0 0 1 2 | 0 -16 18 20 ]
[ 0 0 0 1 | 0 -32 29 225 ]
Row 4 = Row 4 - 225Row 1
Row 3 = Row 3 - 20Row 1
Row 2 = Row 2 + 2Row 1
[ 1 -2 0 -2 | 11 13 -3 -2 ]
[ 0 1 0 3 | 0 0 27 -29 ]
[ 0 0 1 2 | 0 0 58 420 ]
[ 0 0 0 1 | 0 -32 29 225 ]
Row 3 = Row 3 - 2Row 2
Row 4 = Row 4 + 29Row 2
[ 1 -2 0 -2 | 11 13 -3 -2 ]
[ 0 1 0 3 | 0 0 27 -29 ]
[ 0 0 1 2 | 0 0 0 869 ]
[ 0 0 0 1 | 0 -32 29 225 ]
Row 4 = Row 4 - 225Row 1
Row 3 = Row 3 - 2Row 1
Row 2 = Row 2 + 2Row 1
[ 1 -2 0 -2 | 11 13 -3 -2 ]
[ 0 1 0 3 | 0 0 27 -29 ]
[ 0 0 1 2 | 0 0 0 869 ]
[ 0 0 0 1 | 0 0 79 -19 ]
Row 4 = Row 4 + 19Row 2
[ 1 -2 0 -2 | 11 13 -3 -2 ]
[ 0 1 0 3 | 0 0 27 -29 ]
[ 0 0 1 2 | 0 0 0 869 ]
[ 0 0 0 1 | 0 0 0 642 ]
Row 4 = Row 4 - 642Row 3
Row 2 = Row 2 + 29Row 3
Row 1 = Row 1 + 2Row 3
[ 1 -2 0 -2 | 11 13 -3 -2 ]
[ 0 1 0 3 | 0 0 27 0 ]
[ 0 0 1 2 | 0 0 0 869 ]
[ 0 0 0 1 | 0 0 0 0 ]
The augmented matrix on the left side is transformed into the identity matrix, and the right side is transformed into the inverse of the given matrix. Therefore, the inverse of the given matrix is:
[ 11 13 -3 -2 ]
[ 0 0 27 0 ]
[ 0 0 0 869 ]
[ 0 0 0 0 ]
So, the inverse of the given matrix is:
[tex]\left[\begin{array}{cccc}11&13&-3&-2\\0&0&27&0\\0&0&0&869\\0&0&0&0\end{array}\right][/tex]
Correct Question :
Find the inverse of the matrix (if it exists). (If an answer does not exist, enter DNE.)
[tex]\left[\begin{array}{cccc}1&-2&-1&-2\\-3&-5&-2&-3\\2&-5&-2&-5\\-1&7&7&18\end{array}\right][/tex]
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Find the cost function for x items with marginal cost function: given the cost of producing 4 items is $500. O A. 4 C(x) = 2x² - +410.50 3 X 4 C(x)=2+ +455 +3 8 C(x) = 2x² - - +450 X O B. C. D. 8 C'(x) = 4x+ given the cost of producing 4 items is $500. OA. 4 C(x)=2x²- +410.50 OB. C(x) = 2 + +455 OC. 8 C(x) = 2x² - +450 X OD. 8 C(x) = 2x² - - +470 X OE. 8 C(x)=4- +400 +3 4 e+ 2+
Given that the cost of producing 4 items is $500 and marginal cost function is given, we have to find the cost function for x items.
Cost function (C(x)) is given by the formula:
C(x) = ∫[C′(x)] dx + C
where C′(x) is the marginal cost function.
C′(x) = dC(x)/dx
Marginal cost (C′(x)) is given as:
C′(x) = 4x + 10
Now, integrating C′(x) with respect to x, we get:
C(x) = ∫[C′(x)] dx + C
= ∫[4x + 10] dx + C
= 2x² + 10x + C
Now, we need to find C.
Given that C(4) = $500:
C(4) = 2(4)² + 10(4) + C
= 32 + 40 + C
= 72 + C
So, C = $500 - $72
= $428
Putting the value of C in the cost function, we get the final cost function: C(x) = 2x² + 10x + 428
The question is based on finding the cost function for x items with the given marginal cost function and the cost of producing 4 items.
The cost function formula is C(x) = ∫[C′(x)] dx + C, where C′(x) is the marginal cost function.
C′(x) is given as 4x + 10.
Integrating C′(x) with respect to x, we get the cost function as 2x² + 10x + C, where C is the constant of integration.
To find the value of C, we need to use the given information that the cost of producing 4 items is $500. So, putting the value of x = 4 in the cost function, we get the equation as 2(4)² + 10(4) + C = $500. Solving this equation, we get the value of C as $428. Now, we can put the value of C in the cost function to get the final answer.
Thus, the correct option is (A) C(x) = 2x² + 10x + 428.
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A ball is dropped from the top of a window 28 m from the ground. Every time the ball bounces, it loses 16% of its height. Calculate the total vertical distance the ball travelled by the time the ball touches the ground at the 10th bounce.
The total vertical distance traveled by the ball by the time it touches the ground at the 10th bounce is approximately 32.89 meters.
To calculate the total vertical distance traveled by the ball by the time it touches the ground at the 10th bounce, we can use the concept of a geometric series.
Let's break down the problem into individual bounces:
- The ball is dropped from a height of 28 meters, so the distance traveled in the first bounce is 28 meters.
- After each bounce, the ball reaches 16% (or 0.16) of its previous height.
To calculate the total vertical distance, we need to sum up the distances traveled in each bounce up to the 10th bounce.
Using the formula for the sum of a geometric series, the total distance (D) can be calculated as:
D = a * (1 - r^n) / (1 - r)
Where:
a = initial distance (28 meters)
r = common ratio (0.16)
n = number of bounces (10)
Plugging in the values, we have:
D = 28 * (1 - 0.16^10) / (1 - 0.16)
Simplifying the equation, we get:
D ≈ 28 * (1 - 0.0127779) / 0.84
D ≈ 28 * 0.9872221 / 0.84
D ≈ 28 * 1.1745482
D ≈ 32.8933
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The odd function f(t) = t; 0 < t < 1; f(t + 2) = f(t) has Fourier coefficients b₁ = [(-1)"] ng The Fourier series of f(t) is equal to: [2]
The given function, f(t), is defined as an odd function over the interval 0 < t < 1, and it satisfies the periodicity condition f(t + 2) = f(t). The Fourier series expansion of f(t) is given by:
f(t) = b₁sin(πt) + b₂sin(2πt) + b₃sin(3πt) + ...
Since f(t) is an odd function, all the cosine terms in the Fourier series expansion will be zero. The coefficients b₁, b₂, b₃, ... represent the amplitudes of the sine terms in the expansion.
From the given information, it is stated that the coefficient b₁ is equal to [(-1)^(n+1)]/n. Therefore, the Fourier series expansion of f(t) can be written as:
f(t) = [(-1)^(1+1)]/1 * sin(πt) + [(-1)^(2+1)]/2 * sin(2πt) + [(-1)^(3+1)]/3 * sin(3πt) + ...
Simplifying the signs, we have:
f(t) = sin(πt) - (1/2)sin(2πt) + (1/3)sin(3πt) - (1/4)sin(4πt) + ...
Therefore, the Fourier series expansion of the odd function f(t) is given by the sum of sine terms with amplitudes determined by the coefficients b₁ = [(-1)^(n+1)]/n.
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An ______ consists of two different rays with a common endpoint.
Answer:
angle
Step-by-step explanation:
An angle consists of two rays joined together. The rays are joined at the vertex.
Answer:
angle
Step-by-step explanation:
An angle consists of two different rays with a common endpoint.
An angle is formed by two rays that originate from the same point, called the vertex. The rays are referred to as the sides of the angle, and their measurement determines the size of the angle.The figure on the right shows the graph of f(x)=x²-x² - 6x. (a) Find the definite integral of f(x) on [-2,3]. (b) Find the area between the graph of f(x) and the x-axis on [-2,3]. f(x)=x²-x² - 6x 3 j
(a) The definite integral of f(x) on [-2, 3] is -15. (b) The area between the graph of f(x) and the x-axis on [-2, 3] is 15 square units. The function f(x) = x² - x² - 6x simplifies to f(x) = -6x.
(a) To find the definite integral of f(x) on the interval [-2, 3], we integrate f(x) with respect to x and evaluate it at the limits of integration.
∫[-2, 3] (-6x) dx = [-3x²] from -2 to 3
Plugging in the limits, we get:
[-3(3)²] - [-3(-2)²]
= [-3(9)] - [-3(4)]
= -27 - (-12)
= -27 + 12
= -15
Therefore, the definite integral of f(x) on [-2, 3] is -15.
(b) To find the area between the graph of f(x) and the x-axis on the interval [-2, 3], we need to find the absolute value of the integral of f(x) over that interval.
Area = ∫[-2, 3] |(-6x)| dx
Since the function -6x is non-negative on the given interval, the absolute value is not necessary. We can simply calculate the integral as we did in part (a):
∫[-2, 3] (-6x) dx = -15
Therefore, the area between the graph of f(x) and the x-axis on [-2, 3] is 15 square units.
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Find f(-x) - f(x) for the following function. 3 f(x)=x²-x-4 f( − x) − f(x) = (Simplify your answer. Do not factor.)
To find f(-x) - f(x) for the given function f(x) = x² - x - 4, we substitute -x and x into the function and simplify the expression. So the f(-x) - f(x) simplifies to 2x.
To find f(-x) - f(x), we substitute -x and x into the given function f(x) = x² - x - 4.
First, let's evaluate f(-x). Plugging -x into the function, we have f(-x) = (-x)² - (-x) - 4 = x² + x - 4.
Next, we calculate f(x) by substituting x into the function, resulting in f(x) = x² - x - 4.
Finally, we subtract f(x) from f(-x): f(-x) - f(x) = (x² + x - 4) - (x² - x - 4).
Expanding and simplifying this expression, we have f(-x) - f(x) = x² + x - 4 - x² + x + 4.
The x² terms cancel out, and the remaining terms simplify to 2x.
Therefore, f(-x) - f(x) simplifies to 2x.
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Let v₁ and 2 be the 4 x 1 columns of MT and suppose P is the plane through the origin with v₁ and v₂ as direction vectors. (a) Find which of v₁ and v2 is longer in length and then calculate the angle between ₁ and v2 using the dot product method. [3 marks] (b) Use Gram-Schmidt to find e2, the vector perpendicular to v₁ in P, express e2 with integer entries, and check that e₁e2 = 0. [3 marks] 1 (c) Now take v3 := and use 0 0 Gram-Schimdt again to find an ez is orthogonal to e₁ and e2 but is in the hyperplane with V₁, V2 and v3 as a basis. [4 marks]
cos(θ) = (v₁·v₂) / (||v₁|| ||v₂||). Normalize e₃' to get e₃ = e₃' / ||e₃'||.(a) To find which of v₁ and v₂ is longer in length, we calculate their magnitudes:
Magnitude of v₁: ||v₁|| = √(v₁₁² + v₁₂² + v₁₃² + v₁₄²), Magnitude of v₂: ||v₂|| = √(v₂₁² + v₂₂² + v₂₃² + v₂₄²). Compare the magnitudes to determine which vector is longer. To calculate the angle between v₁ and v₂ using the dot product method, we can use the formula: cos(θ) = (v₁·v₂) / (||v₁|| ||v₂||), where · represents the dot product.
(b) To find e₂, the vector perpendicular to v₁ in the plane P, we can use the Gram-Schmidt process: Set e₁ = v₁. Calculate e₂' = v₂ - projₑ₁(v₂), where projₑ₁(v₂) is the projection of v₂ onto e₁. Normalize e₂' to get e₂ = e₂' / ||e₂'||. Check that e₁·e₂ = 0 to verify that e₂ is perpendicular to e₁. (c) To find e₃ orthogonal to e₁ and e₂ but lies in the hyperplane with v₁, v₂, and v₃ as a basis, we apply the Gram-Schmidt process again:
Set e₃' = v₃ - projₑ₁(v₃) - projₑ₂(v₃), where projₑ₁(v₃) and projₑ₂(v₃) are the projections of v₃ onto e₁ and e₂ respectively. Normalize e₃' to get e₃ = e₃' / ||e₃'||. Now we have e₁, e₂, and e₃ as vectors orthogonal to each other in the hyperplane with v₁, v₂, and v₃ as a basis.
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Determine if the specified linear transformation is (a) one-to-one and (b) onto. Justify your answer. T: R³-R², T(e₁)=(1,4), T(e₂) = (3,-5), and T(e3)=(-4,1), where e₁,e2, e3 are the columns of the 3x3 identity matrix. C a. Is the linear transformation one-to-one? O A. T is not one-to-one because the columns of the standard matrix A are linearly independent. O B. T is not one-to-one because the standard matrix A has a free variable. O C. T is one-to-one because T(x) = 0 has only the trivial solution. O D. T is one-to-one because the column vectors are not scalar multiples of each other.
T is one-to-one because the column vectors are not scalar multiples of each other.
Linear transformation is an idea from linear algebra. It is a function from a vector space into another. When a vector is applied to a linear transformation, the resulting vector is also a member of the space.
To determine if the given linear transformation is one-to-one, we have to use the theorem below:
Theorem: A linear transformation T is one-to-one if and only if the standard matrix A for T has only the trivial solution for Ax = 0. The theorem above provides the method to determine whether T is one-to-one or not by finding the standard matrix A and solving the equation Ax = 0 for the trivial solution. If there is only the trivial solution, then T is one-to-one. If there is more than one solution or a free variable in the solution, then T is not one-to-one.
The matrix A for T is as shown below: [1, 3, -4]
[4, -5, 1]
Since the column vectors are not scalar multiples of each other, T is one-to-one.
Thus, option D is the correct answer.
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Evaluate lim ƒ(4 + h) − ƒ(4) h h→0 where f(x) = |x − 4| – 5. If the limit does not exist enter -1000. Limit= (1 point) Evaluate the limit: √x-√a lim x→a 6(x-a) (1 point) If lim x→7 lim f(x) = x→7 f(x) (x − 7)4 = -5, then
To evaluate the limit lim ƒ(4 + h) − ƒ(4) / h as h approaches 0, we substitute the function f(x) = |x − 4| – 5 into the limit expression.
ƒ(4 + h) = |(4 + h) − 4| – 5 = |h| – 5
ƒ(4) = |4 − 4| – 5 = -5
Plugging these values into the limit expression, we have:
lim ƒ(4 + h) − ƒ(4) / h = lim (|h| – 5 - (-5)) / h = lim |h| / h
As h approaches 0, the expression |h| / h does not have a well-defined limit since it depends on the direction from which h approaches 0. The limit does not exist, so we enter -1000.
For the second question, to evaluate the limit lim x→a 6(x-a) / (√x-√a), we can simplify the expression by multiplying the numerator and denominator by the conjugate of the denominator (√x + √a):
lim x→a 6(x-a) / (√x-√a) = lim 6(x-a)(√x + √a) / (x-a)
= lim 6(√x + √a)
As x approaches a, (√x + √a) approaches 2√a. Therefore, the limit is 6(2√a) = 12√a.
For the final question, if lim x→7 lim f(x) = x→7 f(x) (x − 7)⁴ = -5, it implies that the limit of f(x) as x approaches 7 is equal to -5.
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Suppose that when evaluating an integral, we make the trigonometric substitution x = 3 sec 8. 1 Find the value of -0 sin 8 cos 0 + C in terms of x. g sec-¹() + O sec ¹() Osec¹() - +G O sec-¹ (=) - 0-² +0 229 O sec ¹ (§) + V² + C 22²¹ 247 +C
The value of the expression -0 sin(θ) cos(θ) + C, where θ is the angle corresponding to the trigonometric substitution x = 3 sec(θ), can be simplified using trigonometric identities and the properties of the secant function.
Let's start by expressing x = 3 sec(θ) in terms of θ. We know that sec(θ) = 1/cos(θ), so we can rewrite the equation as x = 3/cos(θ). Rearranging this expression, we have cos(θ) = 3/x.
Now, we need to find sin(θ) in terms of x. Recall the Pythagorean identity: sin²(θ) + cos²(θ) = 1. Substituting the value of cos(θ) we found earlier, we get sin²(θ) + (3/x)² = 1. Solving for sin(θ), we have sin(θ) = √(1 - 9/x²).
Next, we substitute these values into the expression -0 sin(θ) cos(θ) + C. Using the identity sin(2θ) = 2 sin(θ) cos(θ), we can simplify the expression as -0 sin(θ) cos(θ) + C = -0 * (1/2) * sin(2θ) + C = 0 * sin(2θ) + C = C.
Therefore, the value of -0 sin(θ) cos(θ) + C, in terms of x, simplifies to just C.
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Suppose the point (80, 60) is on the graph of y = f(x). What point must be on the graph of y= 2f (4x), created from transformations? (160, 15) (160, 240) (20, 120) (320, 120) (20, 30)
Point (80, 60) lies on the graph of y = f(x) to determine point on the graph of y = 2f(4x), which is obtained by applying transformations to the original function.The point (20, 120) is on the graph of y = 2f(4x).
The point that satisfies this condition is (20, 120).
In the equation y = 2f(4x), the function f(x) is scaled vertically by factor of 2 and horizontally compressed by a factor of 4. To find the point on the transformed graph, we need to substitute x = 20 into the equation.First, we apply the horizontal compression by dividing x by 4: 20/4 = 5. Then, we substitute this value into the function f(x) to get f(5). Since the point (80, 60) is on the graph of y = f(x), we know f(80) = 60.
Now, we apply the vertical scaling by multiplying f(5) by 2: 2 * f(5) = 2 * 60 = 120.Therefore, the point (20, 120) is on the graph of y = 2f(4x), which is the transformed function.
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For f(x)=√x and g(x) = 2x + 3, find the following composite functions and state the domain of each. (a) fog (b) gof (c) fof (d) gog (a) (fog)(x) = (Simplify your answer.) For f(x) = x² and g(x)=x² + 1, find the following composite functions and state the domain of each. (a) fog (b) gof (c) fof (d) gog (a) (fog)(x) = (Simplify your answer.) For f(x) = 5x + 3 and g(x)=x², find the following composite functions and state the domain of each. (a) fog (b) gof (c) fof (d) gog (a) (fog)(x) = (Simplify your answer.)
To find the composite functions for the given functions f(x) and g(x), and determine their domains, we can substitute the functions into each other and simplify the expressions.
(a) For (fog)(x):
Substituting g(x) into f(x), we have (fog)(x) = f(g(x)) = f(2x + 3) = √(2x + 3).
The domain of (fog)(x) is determined by the domain of g(x), which is all real numbers.
Therefore, the domain of (fog)(x) is also all real numbers.
(b) For (gof)(x):
Substituting f(x) into g(x), we have (gof)(x) = g(f(x)) = g(√x) = (2√x + 3).
The domain of (gof)(x) is determined by the domain of f(x), which is x ≥ 0 (non-negative real numbers).
Therefore, the domain of (gof)(x) is x ≥ 0.
(c) For (fof)(x):
Substituting f(x) into itself, we have (fof)(x) = f(f(x)) = f(√x) = √(√x) = (x^(1/4)).
The domain of (fof)(x) is determined by the domain of f(x), which is x ≥ 0.
Therefore, the domain of (fof)(x) is x ≥ 0.
(d) For (gog)(x):
Substituting g(x) into itself, we have (gog)(x) = g(g(x)) = g(2x + 3) = (2(2x + 3) + 3) = (4x + 9).
The domain of (gog)(x) is determined by the domain of g(x), which is all real numbers.
Therefore, the domain of (gog)(x) is also all real numbers.
In conclusion, the composite functions and their domains are as follows:
(a) (fog)(x) = √(2x + 3), domain: all real numbers.
(b) (gof)(x) = 2√x + 3, domain: x ≥ 0.
(c) (fof)(x) = x^(1/4), domain: x ≥ 0.
(d) (gog)(x) = 4x + 9, domain: all real numbers.
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Find the eigenfunctions for the following boundary value problem. x²y" - 11xy' +(36+1)y = 0₂ _y(e¯¹) = 0, y(1) = 0. In the eigenfunction take the arbitrary constant (either c₁ or c₂) from the general solution to be 1.
The eigenfunctions for the given boundary value problem are y₁(x) = x⁴ and y₂(x) = x⁹.
The differential equation is x²y" - 11xy' + (36+1)y = 0, where y" represents the second derivative of y with respect to x and y' represents the first derivative of y with respect to x.
To find the eigenfunctions, we can assume a solution of the form y(x) = x^r, where r is a constant to be determined.
Differentiating y(x) twice, we obtain y' = rx^(r-1) and y" = r(r-1)x^(r-2).
Substituting these expressions into the differential equation, we get:
x²(r(r-1)x^(r-2)) - 11x(rx^(r-1)) + (36+1)x^r = 0.
Simplifying and rearranging, we have:
r(r-1)x^r - 11rx^r + (36+1)x^r = 0.
Factoring out x^r, we get:
x^r (r(r-1) - 11r + 36+1) = 0.
This equation holds for all x ≠ 0, so the expression in the parentheses must equal zero.
Solving the quadratic equation r(r-1) - 11r + 37 = 0, we find two distinct roots, r₁ = 4 and r₂ = 9.
Therefore, the eigenfunctions for the given boundary value problem are y₁(x) = x⁴ and y₂(x) = x⁹.
By taking the arbitrary constant from the general solution to be 1, we obtain the eigenfunctions as y₁(x) = x⁴ and y₂(x) = x⁹.
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Given the following vector x, find a non-zero square matrix A such that Ax=0: You can resize a matrix (when appropriate) by clicking and dragging the bottom-right corner of the matrix. -2 -- X = 1 6 000 000 0 0 0 A= =
The matrix A for the given vector X is: A = [1 0 0 0 0 0][1 6,000,000 0 0 0 0]
The vector X is given as:
X = [1 6 000 000 0 0 0].
We need to find a non-zero square matrix A such that Ax = 0.
One of the simplest ways to achieve this is to create a matrix where all the elements of the first row are zero, except for the first element which is non-zero, and the second row has all the elements same as that of the vector X. This can be achieved as follows:
Let us consider a matrix A such that
A = [a11 a12 a13 a14 a15 a16][1 6,000,000 0 0 0 0]
Where a11 is a non-zero element and a12, a13, a14, a15, and a16 are zero.
This is because when we multiply the matrix A with the vector X, the first row of the matrix A will contribute only to the first element of the result (since the rest of the elements of the first row are zero), and the second row of the matrix A will contribute to the remaining elements of the result.
Thus, we can write the following equation:
Ax = [a11 6,000,000a11 0 0 0 0]
To get the value of matrix A, we need to set the product Ax to be zero. For this, we can set a11 to be any non-zero value, say 1.
Therefore, we can write the matrix A as:
A = [1 0 0 0 0 0][1 6,000,000 0 0 0 0]
Multiplying the matrix A with the vector X, we get:
Ax = [1 6,000,000 0 0 0 0]
Therefore, the matrix A for the given vector X is: A = [1 0 0 0 0 0][1 6,000,000 0 0 0 0]
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Given f(x) = g(x) = 4x - 5, determine if (fog)(x) is equal to (gof)(x) {(1,8).(S.S).(5.0), (S-,I-),(1,8-)} = caring bersbro to 15 galw ((E-.S) (F-1).(0.0) (-) 1
The composition of functions \( f(x) \) and \( g(x) \), denoted as \( (f \circ g)(x) \), refers to applying the function \( g(x) \) first and then applying \( f(x) \) to the result. On the other hand, \( (g \circ f)(x) \) implies applying \( f(x) \) first and then \( g(x) \) to the result. We need to determine whether these compositions yield the same result or not.
Given \( f(x) = g(x) = 4x - 5 \), we can compute the composition \( (f \circ g)(x) \) as follows:
\[ (f \circ g)(x) = f(g(x)) = f(4x - 5) = 4(4x - 5) - 5 = 16x - 20 - 5 = 16x - 25. \]
Similarly, the composition \( (g \circ f)(x) \) is:
\[ (g \circ f)(x) = g(f(x)) = g(4x - 5) = 4(4x - 5) - 5 = 16x - 20 - 5 = 16x - 25. \]
By comparing the results, we can see that \( (f \circ g)(x) \) is indeed equal to \( (g \circ f)(x) \), which means that for any value of \( x \), the compositions of \( f(x) \) and \( g(x) \) yield the same output. In other words, \( (f \circ g)(x) = (g \circ f)(x) \) for all \( x \) in the domain.
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Find the values of p for which the series Σn(1 + n²)² is convergent
The series Σn(1 + n²)² is convergent for all values of p greater than or equal to -5.
To determine the values of p for which the series Σn(1 + n²)² converges, we can use the comparison test or the limit comparison test. Let's use the limit comparison test to analyze the convergence of the series.
We compare the given series to the series Σn². Taking the limit as n approaches infinity of the ratio between the terms of the two series, we get:
lim(n→∞) [(n(1 + n²)²) / n²]
= lim(n→∞) [(1 + n²)² / n]
= lim(n→∞) [(1 + 2n² + n^4) / n]
= lim(n→∞) [2 + (1/n) + (1/n³)]
= 2
Since the limit is a finite value (2), the series Σn(1 + n²)² converges if and only if the series Σn² converges. The series Σn² is a p-series with p = 2. According to the p-series test, a p-series converges if p > 1. Therefore, the series Σn(1 + n²)² converges for all values of p greater than or equal to -5.
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Given g = 67 - 93 and f = 107 — 53, find |ğ + ƒ | and |ģ| + |ƒ |. Give EXACT answers. You do NOT have to simplify your radicals! X Ig+f1 = 21 |g|+|f1 = 22 Why are these two answers different? Calculator Check Answer
To find the values of |ğ + ƒ| and |ģ| + |ƒ|, we need to first evaluate the given expressions for g and f.
Given:
g = 67 - 93
f = 107 - 53
Evaluating the expressions:
g = -26
f = 54
Now, let's calculate the values of |ğ + ƒ| and |ģ| + |ƒ|.
|ğ + ƒ| = |-26 + 54| = |28| = 28
|ģ| + |ƒ| = |-26| + |54| = 26 + 54 = 80
Therefore, the exact values are:
|ğ + ƒ| = 28
|ģ| + |ƒ| = 80
Now, let's compare these results to the given equation X Ig+f1 = 21 |g|+|f1 = 22.
We can see that the values obtained for |ğ + ƒ| and |ģ| + |ƒ| are different from the equation X Ig+f1 = 21 |g|+|f1 = 22. This means that the equation is not satisfied with the given values of g and f.
To double-check the calculation, you can use a calculator to verify the results.
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The nationwide attendance per day for a certain motion picture can be approximated using the equation A(t) = 15t2e-t, where A is the attendance per day in thousands of persons and t is the number of months since the release of the film. Find and interpret the rate of change of the daily attendance after 4 months. 5) Find the tangent line to the graph of f(x) = 3e-8x at the point (0, 3). Find the derivative of the function. 6) y = In (8x3-x2) 7) f(x) = In X
5. The rate of the daily attendance after 4 months is -120e⁻⁴
6. The derivative of y = ln(8x³ - x²) is dy/dx = (24x² - 2x)/(8x³ - x²).
7. the derivative of f(x) = ln(x) is f'(x) = 1/x.
What is the tangent line to the graph?5) To find the rate of change of the daily attendance after 4 months, we need to calculate the derivative of the attendance function A(t) with respect to t and evaluate it at t = 4.
[tex]A(t) = 15t^2e^(^-^t^)[/tex]
Let's find the derivative:
[tex]A'(t) = d/dt [15t^2e^(^-^t^)]\\A'(t) = 15(2t)e^(^-^t^) + 15t^2(-e^(^-^t^))\\A'(t) = 30te^(^-^t^) - 15t^2e^(^-^t^)\\A'(t) = 15te^(^-^t^)(2 - t)[/tex]
Now we can evaluate A'(t) at t = 4:
[tex]A'(4) = 15(4)e^(^-^4^)^(^2 ^-^ 4^)\\A'(4) = -120e^(^-^4^)[/tex]
The rate of change of the daily attendance after 4 months is approximately -120e⁻⁴ thousands of persons per month.
6) The function y = ln(8x³ - x²) represents the natural logarithm of the expression (8x³ - x²). To find the derivative of this function, we can apply the chain rule.
Let's find the derivative:
y = ln(8x³ - x²)
dy/dx = 1/(8x³ - x²) * d/dx (8x³ - x²)
dy/dx = 1/(8x^3 - x^2) * (24x^2 - 2x)
Therefore, the derivative of y = ln(8x³ - x²) is dy/dx = (24x² - 2x)/(8x³ - x²).
7) The function f(x) = ln(x) represents the natural logarithm of x. To find the derivative of this function, we can apply the derivative of the natural logarithm.
Let's find the derivative:
f(x) = ln(x)
f'(x) = 1/x
Therefore, the derivative of f(x) = ln(x) is f'(x) = 1/x.
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Suppose a vector v is decomposed into orthogonal components with respect to orthogonal vectors q₁,... qn, so that H r=v-(q²v)9₁ −(q²v)q2 - ·· · (qh' v)¶n ± 0. 91 92 1 This implies that (a) (b) (c) (d) The vectors i are linearly dependent ris orthogonal to vectors q₁,... qn v=0 VE (9₁, ··· 9n) ve
The given expression represents the decomposition of vector v into orthogonal components with respect to orthogonal vectors q₁, ..., qn. The vectors 9₁, ..., 9n are orthogonal projections of v onto q₁, ..., qn, respectively.
The expression Hr = v - (q²v)9₁ - (q²v)q₂ - ... - (qh'v)qn indicates that vector r is obtained by subtracting the orthogonal projections of v onto each of the orthogonal vectors q₁, ..., qn from v itself. Here, (q²v) represents the dot product between q and v.
In part (a), it is implied that the vectors 9₁, ..., 9n are linearly independent. This is because if any of the vectors 9ᵢ were linearly dependent on the others, we could express one of them as a linear combination of the others, leading to redundant information in the decomposition.
In part (b), it is implied that the vectors r and q₁, ..., qn are orthogonal to each other. This follows from the fact that the expression Hr subtracts the orthogonal projections of v onto q₁, ..., qn, resulting in r being orthogonal to each of the q vectors.
In part (c), it is implied that the vector v can be written as the sum of the orthogonal projections of v onto q₁, ..., qn, i.e., v = 9₁ + ... + 9n. This is evident from the decomposition expression, where the vectors 9₁, ..., 9n are subtracted from v to obtain r.
In part (d), it is implied that the vector v is orthogonal to the vector r. This can be seen from the decomposition expression, as the orthogonal projections of v onto q₁, ..., qn are subtracted from v, leaving the remaining component r orthogonal to v.
Overall, the given expression represents the decomposition of vector v into orthogonal components with respect to orthogonal vectors q₁, ..., qn, and the implications (a)-(d) provide insights into the properties of the vectors involved in the decomposition.
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which expression is in simplest form of 3(2x-4)-5(x+3)/3?
Answer:
Step-by-step explanation:
3(2x-4)-5(x+3)/3
6x-12-(5x)/3-1
6x-5x/3-13
13x/3 - 13
13(x/3 - 1) its simplest form of given expression
Two Points A (-2, -1) and B (8, 5) are given. If C is a point on the y-axis such that AC-BC, then the coordinates of C is: A. (3,2) B. (0, 2) C. (0,7) D. (4,2) 2. Given two points A (0, 4) and B (3, 7), what is the angle of inclination that the line segment A makes with the positive x-axis? A. 90⁰ B. 60° C. 45° D. 30°
The coordinates of C are (0, 2), and the angle of inclination that line AB makes with the positive x-axis is 45°.
1) Given two points A (-2, -1) and B (8, 5) on the plane. If C is a point on the y-axis such that AC-BC, then the coordinates of C is (0, 2). Given two points A (-2, -1) and B (8, 5) on the plane.
To find a point C on the y-axis such that AC-BC. So, we can say that C lies on the line passing through A and B, whose equation can be given by
y+1=(5+1)/(8+2)(x+2)y+1
y =3/2(x+2)
The point C lies on the y-axis. So, the x-coordinate of C will be 0. Substitute x=0 in the equation of the line passing through A and B to get
y+1=3/2(0+2)
y+1=3y/2
The coordinates of C are (0, 2).
Hence, the correct option is B. (0, 2).
2) Given two points, A (0, 4) and B (3, 7). The angle of inclination that line segment A makes with the positive x-axis is 45°. The inclination of a line is the angle between the positive x-axis and the line. A line with inclination makes an angle of 90° − with the negative x-axis.
Therefore, the angle of inclination that line AB makes with the positive x-axis is given by
tan = (y2 − y1) / (x2 − x1)
tan = (7 − 4) / (3 − 0)
tan = 3/3 = 1
Therefore, = tan⁻¹(1) = 45°
Hence, the correct option is C. 45°
The coordinates of C are (0, 2), and the angle of inclination that line AB makes with the positive x-axis is 45°.
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The periodic function T(x) obeys T(x + 2) = T(x) and |x| < π/2 T(x) = 1 -1 π/2 ≤ x < π Its Fourier transform is given by ao = 0, a2k+1 = (-1)k. 4 л(2k+1) ' , a2k = 0 and bk = 0 for k integer. Fill in the Fourier coefficients for periodic (Q(x) = Q(x + 2)) function Q(x) = -{{ 0 < x < T π < x < 2π ao = , a3 = ,b₁ = ,b3 = Which of the below are valid properties of the Kronecker delta 8mn for m, n integer? [Tick all that apply - points will be deducted for wrong answers] 1 O 8mn = 1 Omn= cos(mx) cos(nx)dx for all m,n 08mn = e(n-m)x dx 1 2n I ○ 8mn = sin(mx) sin(nx)dx for m > 0,n > 0 O 8mn = cos(mx) sin(nx)dx
The Fourier transform of the given function is
ao=0, a2k+1 = (-1)k. 4 л(2k+1) ' , a2k = 0 and bk = 0 for k integer.
Fourier coefficients for the periodic function
Q(x) = -{{ 0 < x < T π < x < 2π are given below:
ao= 0, a1= 0, a2 = 0, a3 = -4/3πb1 = 0, b3 = 4/3π
Explanation:The Fourier series is a representation of a periodic function f(x) as a sum of sine and cosine functions and is given by
f(x)= a0/2 + ∑(n=1)∞ [an cos(nπx/L) + bn sin(nπx/L)]
Here, L = 2 is the period of the given function.
The Fourier transform of the given function T(x) is
ao=0, a2k+1 = (-1)k. 4 л(2k+1) ' , a2k = 0 and bk = 0 for k integer.
Here, ao = 0 implies that f(x) is an odd function.
Hence, all the a2k coefficients are zero and the Fourier series is given by f(x) = ∑(n=1)∞ bn sin(nπx/L) .
Also, the given function T(x) is continuous and the Fourier series converges uniformly to f(x) in the interval (-π, π).
As per the given information, T(x + 2) = T(x) and |x| < π/2 are given.
π/2 ≤ x < π implies that the function is continuous and is given by
T(x) = 1, π/2 ≤ x < π
Similarly, T(x) = -1, -π < x < -π/2.
The Fourier series of T(x) is given by
T(x) = (1/2) - (4/π)∑(n=1)∞ (sin[(2n-1)πx]/(2n-1))
Q(x) = -{{ 0 < x < T π < x < 2π
The Fourier series for Q(x) is given by
Q(x) = a0/2 + ∑(n=1)∞ [an cos(nπx/L) + bn sin(nπx/L)]
Here, L = 2 is the period of the given function.
Similar to T(x), the function Q(x) is also continuous.
Hence, the Fourier series converges uniformly to f(x) in the interval (-π, π).
Also, Q(x + 2) = Q(x) implies that the Fourier series has to have the same Fourier coefficients as those of T(x).
Here, the Fourier coefficients of T(x) are
ao=0, a2k+1 = (-1)k. 4 л(2k+1) ' , a2k = 0 and bk = 0 for k integer.
Implies, the Fourier coefficients for Q(x) are
ao= 0, a1= 0, a2 = 0, a3 = -4/3π
b1 = 0, b3 = 4/3π
Hence, the valid properties of the Kronecker delta 8mn for m, n integer are:
08mn = e(n-m)x dx.
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mathcalculuscalculus questions and answersquestion 1 not yet answered marked out of 1.50 flag question question 2 not yet answered marked out of 1.00 flag question the position of a hummingbird flying along a straight line in t seconds is given by s(t) = 7t³ – 14t meters. (a) determine the velocity of the bird at t = 9 sec. meter/sec (b) determine the acceleration of the bird at t = 9 sec.
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Question: Question 1 Not Yet Answered Marked Out Of 1.50 Flag Question Question 2 Not Yet Answered Marked Out Of 1.00 Flag Question The Position Of A Hummingbird Flying Along A Straight Line In T Seconds Is Given By S(T) = 7t³ – 14t Meters. (A) Determine The Velocity Of The Bird At T = 9 Sec. Meter/Sec (B) Determine The Acceleration Of The Bird At T = 9 Sec.
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Transcribed image text: Question 1 Not yet answered Marked out of 1.50 Flag question Question 2 Not yet answered Marked out of 1.00 Flag question The position of a hummingbird flying along a straight line in t seconds is given by s(t) = 7t³ – 14t meters. (a) Determine the velocity of the bird at t = 9 sec. meter/sec (b) Determine the acceleration of the bird at t = 9 sec. meter/sec² (c) Determine the acceleration the bird when the velocity equals 0. meter/sec² A ball is thrown downward with a speed of 10 ft/s from the top of a 100-foot-tall building. After t seconds, its height above the ground is given by s(t) = -20t² - 10t + 100. (a) Determine how long it takes for the ball to hit the ground. sec (b) Determine the velocity of the ball when it hits the ground. ft/sec
Hummingbird: (a) The velocity at t = 9 sec is 567 meter/sec. (b) The acceleration at t = 9 sec is 378 meter/sec². (c) The acceleration when the velocity equals 0 is 84 meter/sec². Ball: (a) The time to hit the ground is approximately 2 seconds. (b) The velocity of the ball when it hits the ground is approximately -90 ft/sec (downward direction).
(a) To determine the velocity of the hummingbird at t = 9 sec, we need to find the derivative of the position function, s(t), with respect to time. Taking the derivative of 7t³ - 14t, we get 21t² - 14. Evaluating this expression at t = 9, we get 21(9)² - 14 = 567 meter/sec.
(b) To find the acceleration of the hummingbird at t = 9 sec, we need to take the derivative of the velocity function, which is the derivative of the position function. Taking the derivative of 21t² - 14, we get 42t. Substituting t = 9 into this expression, we get 42(9) = 378 meter/sec².
(c) When the velocity of the bird equals 0, we need to find the value of t for which the velocity function is equal to 0. The velocity function is 21t² - 14. Setting this equal to 0 and solving for t, we get 21t² - 14 = 0. Factoring out 7 from this equation, we have 7(3t² - 2) = 0. Solving for t, we find two solutions: t = √(2/3) and t = -√(2/3). Since time cannot be negative, we take t = √(2/3). Substituting this value into the acceleration function, we get 42(√(2/3)) ≈ 84 meter/sec². Therefore, the acceleration of the hummingbird when the velocity equals 0 is approximately 84 meter/sec².
For the ball thrown downward from a 100-foot-tall building, we will provide the solutions in a separate paragraph.
(a) To determine how long it takes for the ball to hit the ground, we need to find the time when the height of the ball, given by the function s(t) = -20t² - 10t + 100, is equal to 0. This represents the height of the ball when it reaches the ground. We can set s(t) equal to 0 and solve for t:
-20t² - 10t + 100 = 0
To solve this quadratic equation, we can either factor it or use the quadratic formula. In this case, factoring is not straightforward, so let's use the quadratic formula:
t = (-b ± √(b² - 4ac)) / (2a)
For the equation -20t² - 10t + 100 = 0, we have a = -20, b = -10, and c = 100. Plugging these values into the quadratic formula, we get:
t = (-(-10) ± √((-10)² - 4(-20)(100))) / (2(-20))
= (10 ± √(100 + 8000)) / (-40)
= (10 ± √(8100)) / (-40)
= (10 ± 90) / (-40)
Simplifying further, we have:
t₁ = (10 + 90) / (-40) = 100 / (-40) = -2.5
t₂ = (10 - 90) / (-40) = -80 / (-40) = 2
Since time cannot be negative in this context, the ball takes approximately 2 seconds to hit the ground.
(b) To determine the velocity of the ball when it hits the ground, we need to find the derivative of the height function, s(t), with respect to time. Taking the derivative, we get:
v(t) = s'(t) = -40t - 10
Substituting t = 2 into this expression, we get:
v(2) = -40(2) - 10 = -80 - 10 = -90 ft/sec
Therefore, the velocity of the ball when it hits the ground is approximately -90 ft/sec (negative indicates the downward direction).
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For u = (2, 1,6), v = (-2,0,1), (u-v)v =
An vector u = (2, 1,6), v = (-2,0,1), (u-v)v = -3.
To calculate the expression (u-v)v, to first find the vector subtraction of u and v, and then perform the dot product with v.
Given:
u = (2, 1, 6)
v = (-2, 0, 1)
Vector subtraction (u-v):
u-v = (2-(-2), 1-0, 6-1) = (4, 1, 5)
calculate the dot product of (u-v) and v:
(u-v)v = (4, 1, 5) · (-2, 0, 1) = 4×(-2) + 10 + 51 = -8 + 0 + 5 = -3
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ting cubic Lagrange Interpolation find the value of y at x-1/2. Given that x 13/2 02 5/2 y 3 13/4 3 5/3 7/3 (b) Use the Euler method to solve numerically the initial value problem with step size h = 0.4 to compute y(2). dy dx=y-x²+1,y(0) = 0.5 (i) Use Euler method. (ii) Use Heun method. [10 marks] [5 marks] [10 marks]
According to the question For each iteration [tex]\(i = 1, 2, 3, \ldots\)[/tex] until we reach the desired value of [tex]\(x = 2\):[/tex]
Let's solve the given problems using cubic Lagrange interpolation and the Euler method.
(a) Cubic Lagrange Interpolation:
To find the value of [tex]\(y\) at \(x = \frac{1}{2}\)[/tex] using cubic Lagrange interpolation, we need to construct a cubic polynomial that passes through the given data points.
The given data points are:
[tex]\(x = \left[\frac{1}{3}, \frac{2}{3}, 2, \frac{5}{3}\right]\)[/tex]
[tex]\(y = \left[3, \frac{13}{4}, 3, \frac{5}{3}\right]\)[/tex]
The cubic Lagrange interpolation polynomial can be represented as:
[tex]\(P(x) = L_0(x)y_0 + L_1(x)y_1 + L_2(x)y_2 + L_3(x)y_3\)[/tex]
where [tex]\(L_i(x)\)[/tex] are the Lagrange basis polynomials.
The Lagrange basis polynomials are given by:
[tex]\(L_0(x) = \frac{(x - x_1)(x - x_2)(x - x_3)}{(x_0 - x_1)(x_0 - x_2)(x_0 - x_3)}\)[/tex]
[tex]\(L_1(x) = \frac{(x - x_0)(x - x_2)(x - x_3)}{(x_1 - x_0)(x_1 - x_2)(x_1 - x_3)}\)[/tex]
[tex]\(L_2(x) = \frac{(x - x_0)(x - x_1)(x - x_3)}{(x_2 - x_0)(x_2 - x_1)(x_2 - x_3)}\)[/tex]
[tex]\(L_3(x) = \frac{(x - x_0)(x - x_1)(x - x_2)}{(x_3 - x_0)(x_3 - x_1)(x_3 - x_2)}\)[/tex]
Substituting the given values, we have:
[tex]\(x_0 = \frac{1}{3}, x_1 = \frac{2}{3}, x_2 = 2, x_3 = \frac{5}{3}\)[/tex]
[tex]\(y_0 = 3, y_1 = \frac{13}{4}, y_2 = 3, y_3 = \frac{5}{3}\)[/tex]
Substituting these values into the Lagrange basis polynomials, we get:
[tex]\(L_0(x) = \frac{(x - \frac{2}{3})(x - 2)(x - \frac{5}{3})}{(\frac{1}{3} - \frac{2}{3})(\frac{1}{3} - 2)(\frac{1}{3} - \frac{5}{3})}\)[/tex]
[tex]\(L_1(x) = \frac{(x - \frac{1}{3})(x - 2)(x - \frac{5}{3})}{(\frac{2}{3} - \frac{1}{3})(\frac{2}{3} - 2)(\frac{2}{3} - \frac{5}{3})}\)[/tex]
[tex]\(L_2(x) = \frac{(x - \frac{1}{3})(x - \frac{2}{3})(x - \frac{5}{3})}{(2 - \frac{1}{3})(2 - \frac{2}{3})(2 - \frac{5}{3})}\)[/tex]
[tex]\(L_3(x) = \frac{(x\frac{1}{3})(x - \frac{2}{3})(x - 2)}{(\frac{5}{3} - \frac{1}{3})(\frac{5}{3} - \frac{2}{3})(\frac{5}{3} - 2)}\)[/tex]
Now, we can substitute [tex]\(x = \frac{1}{2}\)[/tex] into the cubic Lagrange interpolation polynomial:
[tex]\(P\left(\frac{1}{2}\right) = L_0\left(\frac{1}{2}\right)y_0 + L_1\left(\frac{1}{2}\right)y_1 + L_2\left(\frac{1}{2}\right)y_2 + L_3\left(\frac{1}{2}\right)y_3\)[/tex]
Substituting the calculated values, we can find the value of [tex]\(y\) at \(x = \frac{1}{2}\).[/tex]
(b) Euler Method:
(i) Using Euler's method, we can approximate the solution to the initial value problem:
[tex]\(\frac{dy}{dx} = y - x^2 + 1\)[/tex]
[tex]\(y(0) = 0.5\)[/tex]
We are asked to compute [tex]\(y(2)\)[/tex] using a step size [tex]\(h = 0.4\).[/tex]
Euler's method can be applied as follows:
Step 1: Initialize the values
[tex]\(x_0 = 0\)[/tex] (initial value of [tex]\(x\))[/tex]
[tex]\(y_0 = 0.5\)[/tex] (initial value of [tex]\(y\))[/tex]
Step 2: Iterate using Euler's method
For each iteration [tex]\(i = 1, 2, 3, \ldots\)[/tex] until we reach the desired value of [tex]\(x = 2\):[/tex]
[tex]\(x_i = x_{i-1} + h\)[/tex] (increment [tex]\(x\)[/tex] by the step size [tex]\(h\))[/tex]
[tex]\(y_i = y_{i-1} + h \cdot (y_{i-1} - (x_{i-1})^2 + 1)\)[/tex]
Continue iterating until [tex]\(x = 2\)[/tex] is reached.
(ii) Using Heun's method, we can also approximate the solution to the initial value problem using the same step size [tex]\(h = 0.4\).[/tex]
Heun's method can be applied as follows:
Step 1: Initialize the values
[tex]\(x_0 = 0\) (initial value of \(x\))[/tex]
[tex]\(y_0 = 0.5\) (initial value of \(y\))[/tex]
Step 2: Iterate using Heun's method
For each iteration [tex]\(i = 1, 2, 3, \ldots\)[/tex] until we reach the desired value of [tex]\(x = 2\):[/tex]
[tex]\(x_i = x_{i-1} + h\) (increment \(x\) by the step size \(h\))[/tex]
[tex]\(k_1 = y_{i-1} - (x_{i-1})^2 + 1\) (slope at \(x_{i-1}\))[/tex]
[tex]\(k_2 = y_{i-1} + h \cdot k_1 - (x_i)^2 + 1\) (slope at \(x_i\) using \(k_1\))[/tex]
[tex]\(y_i = y_{i-1} + \frac{h}{2} \cdot (k_1 + k_2)\)[/tex]
Continue iterating until [tex]\(x = 2\)[/tex] is reached
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