Moving to another question will save this response. Find the position function s(t) given that: a(t) = 4 + 6t, v(1) = 2, and s(0) = 6 Os(t)=1²+t³-5t+6 Os(t)=2t² +t³-5t +6 Os(t) = 4t +3t²-5 Os(t) = 4t-3t² +2 Moving to another question will save this response.

Answers

Answer 1

The position function is s(t) = 2t² + t³ - 5t + 6.

The main answer is as follows:

Given,a(t) = 4 + 6t, v(1) = 2, and s(0) = 6.

The formula to calculate the velocity of an object at a certain time is:v(t) = ∫a(t) dt + v₀where v₀ is the initial velocity at t = 0s(0) = 6.

Hence, we can calculate the initial velocity,v(1) = ∫4+6t dt + 2v(1) = 4t+3t²+v₀.

Now, substitute the value of v(1) = 2 in the above equationv(1) = 4(1) + 3(1)² + v₀v₀ = -2So, the velocity function of the object isv(t) = ∫4+6t dt - 2v(t) = 4t+3t²-2.

Now, we need to find the position function of the objecti.e. s(t)s(t) = ∫4t+3t²-2 dt + 6s(t) = 2t² + t³ - 5t + 6.

Therefore, the position function s(t) is s(t) = 2t² + t³ - 5t + 6.

We first calculated the velocity function by integrating the acceleration function with respect to time and using the initial velocity value.

Then we integrated the velocity function to obtain the position function.

The final answer for the position function is s(t) = 2t² + t³ - 5t + 6.

In conclusion, we found the position function s(t) using the given values of acceleration, initial velocity, and initial position.

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Related Questions

Find the Fourier Transform of f(x) = {x², lx| a

Answers

The Fourier transform of the function f(x) = x² is given by F(k) = (4π²/k³)δ''(k), where F(k) represents the Fourier transform of f(x), δ''(k) denotes the second derivative of the Dirac delta function, and k is the frequency variable.

The Fourier transform is a mathematical operation that decomposes a function into its constituent frequencies. In this case, we want to find the Fourier transform of the function f(x) = x².

The Fourier transform of f(x) is denoted by F(k), where k is the frequency variable. To compute the Fourier transform, we use the integral formula:

F(k) = ∫[f(x) * e^(-ikx)] dx,

where e^(-ikx) represents the complex exponential function. Substituting f(x) = x² into the integral, we have: F(k) = ∫[x² * e^(-ikx)] dx.

To evaluate this integral, we can use integration by parts. After performing the integration, we arrive at the following expression:

F(k) = (4π²/k³)δ''(k),

where δ''(k) denotes the second derivative of the Dirac delta function. This result indicates that the Fourier transform of f(x) = x² is a scaled version of the second derivative of the Dirac delta function. The scaling factor is given by (4π²/k³).

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A Recall the definition, "An element a of an extension field E of a field F is algebraic over F if f(a)=0 for some nonzero f(x) = F[x]. If a is not algebraic over F, then a is transcendental over F". Assume that √√ is not transcendental over Q. Then √√ is algebraic over Q. There exists f(x) = Q[x] such that ƒ(√)=0. E Comment Step 3 of 3^ Note that all odd-degree terms involve √√, and all even-degree terms involve . Move all odd- degree terms to the right side. Factor √ out from terms on the left, and then square both sides. The resulting equation shows that is algebraic over Q, which contradicts the fact that is transcendental over This completes the proof.

Answers

The given argument proves that if √√ is not transcendental over Q, then it must be algebraic over Q. By manipulating the equation and showing that √√ satisfies a polynomial equation with rational coefficients, the proof establishes the algebraic nature of √√ over Q, contradicting its assumed transcendental property.

The proof begins by assuming that √√ is not transcendental over Q. It then proceeds to show that √√ must be algebraic over Q. This is done by constructing a polynomial equation f(x) = Q[x] such that f(√√) = 0.

In the third step, the proof notes that all odd-degree terms involve √√ and all even-degree terms involve √. By moving all odd-degree terms to the right side, we obtain an equation where only even-degree terms involve √.

Next, the proof factors √ out from the terms on the left side and squares both sides of the equation. This simplification allows us to express √√ in terms of √.

Finally, the resulting equation shows that √√ satisfies a polynomial equation with rational coefficients, proving that it is algebraic over Q. This contradicts the initial assumption that √√ is transcendental over Q, completing the proof.

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The graph below represents a map of the distance from Blake's house to the school

If each unit on the graph represents 0.75 miles, how many miles is the diagonal path from Blake's house to the school?


HELP!! 100 Brainly points given!!

Answers

Answer:

C. 6 miles

Step-by-step explanation:

If each unit on the graph is 0.75 miles that means each box is 0.75 miles.

So you must count how many boxes it takes to reach the school from Blake's house. Count the amount of boxes the line passes through.

So in this case 8 boxes are crossed to get to the school.

Therefore you do:

8 × 0.75 = 6

Answer = 6 miles

PA Use PMT= to determine the regular payment amount, rounded to the nearest dollar. Your credit card has a balance of $3400 and an annual interest -nt 1-(₁+) rate of 17%. With no further purchases charged to the card and the balance being paid off over two years, the monthly payment is $168, and the total interest paid is $632. You can get a bank loan at 9.5% with a term of three years. Complete parts (a) and (b) below. a. How much will you pay each month? How does this compare with the credit-card payment each month? Select the correct choice below and fill in the answer boxes to complete your choice. (Do not round until the final answer. Then round to the nearest dollar as needed.) A. The monthly payments for the bank loan are approximately $ B. The monthly payments for the bank loan are approximately $ This is $ This is $ more than the monthly credit-card payments. less than the monthly credit card payments.

Answers

The monthly payment for the bank loan is $65 more than the monthly credit-card payments ($103 − $168).

a. The monthly payments for the bank loan are approximately $103.

The calculations of the monthly payment for the credit card are already given:

PMT = $168.

Using the PMT function in Microsoft Excel, the calculation for the monthly payment on a bank loan at 9.5% for three years and a principal of $3,400 is shown below:

PMT(9.5%/12, 3*12, 3400)

= $102.82

≈ $103

Therefore, the monthly payments for the bank loan are approximately $103, which is less than the monthly credit-card payments.

b. The correct answer is:

This is $65 more than the monthly credit-card payments.

Explanation: We can calculate the total interest paid on the bank loan using the formula:

Total interest = Total payment − Principal = (Monthly payment × Number of months) − Principal

The total payment on the bank loan is $3,721.15 ($103 × 36), and the principal is $3,400.

Therefore, the total interest paid on the bank loan is $321.15.

The monthly payment on the credit card is $168 for 24 months, or $4,032.

Therefore, the total interest paid on the credit card is $632.

The bank loan has a lower monthly payment ($103 vs $168) and lower total interest paid ($321.15 vs $632) compared to the credit card.

However, the monthly payment for the bank loan is $65 more than the monthly credit-card payments ($103 − $168).

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I need help pleEASEE!

Answers

Step-by-step explanation:

you have one rectangle "at the base"

S = b × h = 2ft × 6ft = 12 ft²

one rectangle "at the back"

S = b × h = 2ft × 10ft = 20 ft²

one rectangle "along the length of the hypotenuse"

S = b × h = 2ft × 8ft = 16 ft²

and two triangles

S = (b × h) / 2 = (6ft × 8ft)/2 = 24 ft²

total S = 12ft²+20ft²+16ft²+24ft²+24ft² = 96 ft²

Answer:   76 ft²

Step-by-step explanation:

Surface area for the prism = all the area's from the net added up.

Area triangle = 1/2 bh      b=base, we need to find    h, height=C=8

Use pythagorean to find base

c²=a²+b2

D² = C² + b²

10² = 8² + b²

b² = 100-64

b² = 36

b = 6

Area triangle = 1/2 (6)(8)

Area triangle = 24

Area of top rectangle = LW

L, length = A = 2

W, width = C = 8

Area of top rectangle = (2)(8)

Area of top rectangle = 16

Area of bottom rectangle =  LW

L, length = A = 2

W, width = B = 6

Area of bottom rectangle = (2)(6)

Area of bottom rectangle = 12

Surface Area = 2(triangle) + (top rectangle) + (bottom rectangle)

Surface Area = 2(24) +16 +12

Surface Area = 48 +28

Surface Area = 76 ft²

Match the mean, median and mode for the following: 0, 0, 2, 4, 5, 6, 6.8.9

Answers

The mean, median and mode for the given set of numbers, 0, 0, 2, 4, 5, 6, 6.8, and 9 are Mean:4.1, median:4.5 and Mode: 0 and 6

The mean is defined as the average of the given set of numbers. To calculate the mean, sum all the numbers and divide it by the total count of numbers.
The sum of the given set of numbers is: 0 + 0 + 2 + 4 + 5 + 6 + 6.8 + 9 = 32.8
Hence, the mean is given by:(32.8)/(8) = 4.1
Thus, the mean of the given set of numbers is 4.1.
The median is defined as the middle number of the set of numbers arranged in order. If the set of numbers is even, the median is calculated by taking the average of the two middle numbers. First, the given set of numbers is arranged in order:
0, 0, 2, 4, 5, 6, 6.8, 9
There are 8 numbers in the given set, which is even.
The middle numbers are 4 and 5.
Thus, the median is the average of 4 and 5:(4+5)/(2) = 4.5
Thus, the median of the given set of numbers is 4.5.
The mode is the number that occurs most frequently in the given set of numbers.
The mode of the given set of numbers is 0 and 6 since both these numbers occur twice in the set.

Thus, the mean, median and mode for the given set of numbers, 0, 0, 2, 4, 5, 6, 6.8, and 9 are Mean:4.1, median:4.5 and Mode: 0 and 6

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.I we have a field F := Z/3Z[x]/(x 3−x−1). Find the inverse of x+1+(x 3−x−1) in F. Show clearly how the solution is reached.

Answers

The inverse of x+1 in F is x²-2x.

To find the inverse, we use the Euclidean algorithm to find the inverse of x+1 in the field F.

We first find the GCD of x+1 and x³-x-1. We can see that the GCD is 1 and that x³-x-1 = (x+1)(x²-2x-1)+1.

Now, we can use the extended Euclidean algorithm to find the inverse of x+1.

Let’s call c the inverse of x+1. We want to find c such that c × (x+1) = 1 mod (x³-x-1).

We start by rewriting x³-x-1 in terms of x+1:

x³-x-1 = (x+1)(x²-2x-1)+1

Thus, we can write c × (x+1) = (x+1)d + 1, for some integer d.

Substituting d in the above equation and simplifying, we obtain the equation c×(x²-3x-1) = -1.

We can solve this equation by setting c=1 and d=-(x²-3x-1), and thus,

Inverse of x+1 in F = 1-(x²-3x-1) + (x³-x-1)

= 1-(x²-3x-1) + (x+1)(x²-2x-1)+1

= (x²-2x-1)+1

= x²-2x

Hence, the inverse of x+1 in F is x²-2x.

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Let T: R2 R3 be a linear transformation for which T 7 Find T[3] and [5] T a +[3] - +[b] a = 18-11 = 2 and T 3 A-B =

Answers

The question is about linear transformation. T[3] is equal to [6/7], and T[5] is equal to [18/7, -11].

In the given linear transformation T:[tex]R^{2}[/tex] -> [tex]R^{3}[/tex], we are given that T[7] = [2] and T[3a+b] = [18, -11]. From the information T[7] = [2], we can deduce that T[1] = (1/7)T[7] = (1/7)[2] = [2/7].

To find T[3a+b], we can write it as T[3a] + T[b]. Since T is a linear transformation, we have T[3a+b] = 3T[a] + T[b].

From the given equation T[3a+b] = [18, -11], we can equate the corresponding components: 3T[a] + T[b] = [18, -11].

Using the previously found value of T[1] = [2/7], we can rewrite the equation as: 3(a/7)[2] + T[b] = [18, -11].

Simplifying, we have (6/7)a + T[b] = [18, -11]. Comparing the components, we get: (6/7)a = 18 and T[b] = -11.

Solving the first equation, we find a = 21. Therefore, T[3] = 3T[1] = 3[2/7] = [6/7] and T[5] = 3T[1] + T[2] = 3[2/7] + [-11] = [18/7, -11].

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Calculate the size of one of the interior angles of a regular heptagon (i.e. a regular 7-sided polygon) Enter the number of degrees to the nearest whole number in the box below. (Your answer should be a whole number, without a degrees sign.) Answer: Next page > < Previous page

Answers

The answer should be a whole number, without a degree sign and it is 129.

A regular polygon is a 2-dimensional shape whose angles and sides are congruent. The polygons which have equal angles and sides are called regular polygons. Here, the given polygon is a regular heptagon which has seven sides and seven equal interior angles. In order to calculate the size of one of the interior angles of a regular heptagon, we need to use the formula:

Interior angle of a regular polygon = (n - 2) x 180 / nwhere n is the number of sides of the polygon. For a regular heptagon, n = 7. Hence,Interior angle of a regular heptagon = (7 - 2) x 180 / 7= 5 x 180 / 7= 900 / 7

degrees= 128.57 degrees (rounded to the nearest whole number)

Therefore, the size of one of the interior angles of a regular heptagon is 129 degrees (rounded to the nearest whole number). Hence, the answer should be a whole number, without a degree sign and it is 129.

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In a high school, 70% of the 2000 students have cellular phones. The principal is randomly selecting six students to help plan rules for using cell phones in the school. What is the probability that exactly four of the selected students have cellular phones

Answers

The probability that exactly four of the selected students have cellular phones is approximately 0.324 or 32.4%.

The binomial probability formula can be used to determine the likelihood that exactly four of the chosen pupils own cell phones. The formula is given by:

P(X = k) = [tex](nCk) * (p^k) * (q^(n-k))[/tex]

Where:

The likelihood of exactly k successes is P(X = k).

n is the total number of trials or students selected,

k is the number of successes (four students with cellular phones),

p is the probability of success (proportion of students with cellular phones),

q is equal to the likelihood of failure (1 - p).,

nCk is the number of combinations of n items taken k at a time.

In this case, n = 6 (since the principal is selecting six students), k = 4, p = 0.7 (proportion of students with cellular phones), and q = 1 - p = 1 - 0.7 = 0.3.

Now we can calculate the probability:

P(X = 4) = [tex](6C4) * (0.7^4) * (0.3^(6-4))[/tex]

First, calculate (6C4):

(6C4) = 6! / (4! * (6-4)!) = (6 * 5 * 4 * 3 * 2 * 1) / ((4 * 3 * 2 * 1) * (2 * 1)) = 15

Now, plug in the values:

P(X = 4) = [tex]15 * (0.7^4) * (0.3^2)[/tex] = 15 * 0.2401 * 0.09 = 0.324135

Therefore, the probability that exactly four of the selected students have cellular phones is approximately 0.324 or 32.4%.

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fx² + 12x + 27 g) -2x² + 8x h) x² + 14x + 45 5.4 Factor Trinomials of the Form ax² + bx+c, pages 256-263 8. Factor fully. a) 2x² + 4x - 48 b)-3x² + 18x + 21 c) -4x² - 20x +96 d) 0.5x² - 0.5 e) -2x² + 24x – 54 f) 10x² + 30x - 280

Answers

a) The trinomial 2x² + 4x - 48 can be factored as (2x - 8)(x + 6).

b) The trinomial -3x² + 18x + 21 can be factored as -3(x - 3)(x + 1).

c) The trinomial -4x² - 20x + 96 can be factored as -4(x + 4)(x - 6).

d) The trinomial 0.5x² - 0.5 can be factored as 0.5(x - 1)(x + 1).

e) The trinomial -2x² + 24x - 54 can be factored as -2(x - 3)(x - 9).

f) The trinomial 10x² + 30x - 280 can be factored as 10(x - 4)(x + 7).

a) To factor 2x² + 4x - 48, we need to find two numbers whose product is -48 and whose sum is 4. The numbers are 8 and -6, so we can factor the trinomial as (2x - 8)(x + 6).

b) For -3x² + 18x + 21, we need to find two numbers whose product is 21 and whose sum is 18. The numbers are 3 and 7, but since the coefficient of x² is negative, we have -3(x - 3)(x + 1).

c) The trinomial -4x² - 20x + 96 can be factored by finding two numbers whose product is 96 and whose sum is -20. The numbers are -4 and -6, so we have -4(x + 4)(x - 6).

d) To factor 0.5x² - 0.5, we can factor out the common factor of 0.5 and then apply the difference of squares. The result is 0.5(x - 1)(x + 1).

e) For -2x² + 24x - 54, we can factor out -2 and then find two numbers whose product is -54 and whose sum is 24. The numbers are 3 and 9, so the factored form is -2(x - 3)(x - 9).

f) The trinomial 10x² + 30x - 280 can be factored by finding two numbers whose product is -280 and whose sum is 30. The numbers are 4 and -7, so the factored form is 10(x - 4)(x + 7).

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Which of the following harmonic oscillators could experience "pure" resonance? Select ALL that apply. 01 d²y dt² dy dt +8 4t + 20y =e=¹t sin(2t) d²y dt² + 4y = sin(2t) d²y dy +8. + 20y sin(2t) dt² dt d²y +9y = sin(2t) dt² d'y dy + 16y dt² dt +8. چے

Answers

The harmonic oscillators that could experience "pure" resonance are the ones described by the differential equations d²y/dt² + 4y = sin(2t) and d²y/dt² + 9y = sin(2t).

In a harmonic oscillator, "pure" resonance occurs when the driving frequency matches the natural frequency of the system, resulting in maximum amplitude and phase difference of the oscillation. To determine the systems that can experience pure resonance, we need to identify the equations that match the form of a harmonic oscillator driven by a sinusoidal force.

Among the given options, the differential equations d²y/dt² + 4y = sin(2t) and d²y/dt² + 9y = sin(2t) are in the standard form of a harmonic oscillator with a sinusoidal driving force. The term on the left side represents the acceleration and the term on the right side represents the external force.

The differential equations d²y/dt² + 8(4t + 20y) = sin(2t) and d²y/dt² + 16y = sin(2t) do not match the standard form of a harmonic oscillator. They include additional terms (8(4t + 20y) and 16y) that are not consistent with the form of a simple harmonic oscillator.

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This question is designed to be answered without a calculator. In(2(e+ h))-In(2 e) = lim h-0 h 02/12/201 O O | | e 1 2e

Answers

In this problem, we need to find the limit of the expression In(2(e + h)) - In(2e) as h approaches 0, without using a calculator.

To begin,

we'll simplify the expression by applying the quotient rule of logarithms, which states that

ln(a) - ln(b) = ln(a/b).

In(2(e + h)) - In(2e) = ln[2(e + h)/2e]

                              = ln(e + h)/e.

Then, we can plug in 0 for h and simplify further:

lim h→0 ln(e + h)/e= ln(e)/e

                            = 1/e.

Therefore, the limit of the expression In(2(e + h)) - In(2e) as h approaches 0 is 1/e.

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In the questions below P(x, y) means "x + y = xy", where x and y are integers. Determine with justification the truth value of each statement.
(a) P(−1, −1)
(b) P(0, 0)
(c) ∃y P(3, y)
(d) ∀x∃y P(x, y)

Answers

The given equation is `P(x, y) = x + y = xy` where `x` and `y` are integers.Here, we are required to determine the truth value of each statement, so let's solve it one by one.

(a) P(-1, -1)When we substitute x = -1 and y = -1 in `P(x, y)`,

we get

`(-1) + (-1) = (-1) * (-1)`

=> `-2 = 1`, which is false.

Therefore, the statement P(-1, -1) is false.

(b) P(0, 0)When we substitute x = 0 and y = 0 in `P(x, y)`,

we get

`0 + 0 = 0 * 0`

=> `0 = 0`, which is true.

Therefore, the statement P(0, 0) is true.

(c) ∃y P(3, y)In this case, we need to find whether there exists a value of y for which `P(3, y)` is true.

We have `3 + y = 3y`. Simplifying this equation, we get `2y = 3`. There is no integer value of y that satisfies this equation.Therefore, the statement ∃y P(3, y) is false.

(d) ∀x∃y P(x, y)In this case, we need to find whether for all values of x, there exists a value of y for which `P(x, y)` is true. We have `x + y = xy`. To satisfy this equation, either `x` or `y` has to be zero. If `x = 0`, then we can take any integer value of `y`. Similarly, if `y = 0`, then we can take any integer value of `x`. Therefore, the given statement is true.Therefore, the statement ∀x∃y P(x, y) is true.

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A
​$5000
bond that pays
6​%
semi-annually
is redeemable at par in
10
years. Calculate the purchase price if it is sold to yield
4​%
compounded
semi-annually
​(Purchase price of a bond is equal to the present value of the redemption price plus the present value of the interest​ payments).

Answers

Therefore, the purchase price of the bond is $4,671.67.The bond is for $5,000 that pays 6% semi-annually is redeemable at par in 10 years. Calculate the purchase price if it is sold to yield 4% compounded semi-annually.

Purchase price of a bond is equal to the present value of the redemption price plus the present value of the interest payments.Purchase price can be calculated as follows;PV (price) = PV (redemption) + PV (interest)PV (redemption) can be calculated using the formula given below:PV (redemption) = redemption value / (1 + r/2)n×2where n is the number of years until the bond is redeemed and r is the yield.PV (redemption) = $5,000 / (1 + 0.04/2)10×2PV (redemption) = $3,320.11

To find PV (interest) we need to find the present value of 20 semi-annual payments.  The interest rate is 6%/2 = 3% per period and the number of periods is 20.

Therefore:PV(interest) = interest payment x [1 – (1 + r/2)-n×2] / r/2PV(interest) = $150 x [1 – (1 + 0.04/2)-20×2] / 0.04/2PV(interest) = $150 x 9.0104PV(interest) = $1,351.56Thus, the purchase price of the bond is:PV (price) = PV (redemption) + PV (interest)PV (price) = $3,320.11 + $1,351.56PV (price) = $4,671.67

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The purchase price of the bond is $6039.27.

The purchase price of a $5000 bond that pays 6% semi-annually and is redeemable at par in 10 years is sold to yield 4% compounded semi-annually can be calculated as follows:

Redemption price = $5000

Semi-annual coupon rate = 6%/2

= 3%

Number of coupon payments = 10 × 2

= 20

Semi-annual discount rate = 4%/2

= 2%

Present value of redemption price = Redemption price × [1/(1 + Semi-annual discount rate)n]

where n is the number of semi-annual periods between the date of purchase and the redemption date

= $5000 × [1/(1 + 0.02)20]

= $2977.23

The present value of each coupon payment = (Semi-annual coupon rate × Redemption price) × [1 − 1/(1 + Semi-annual discount rate)n] ÷ Semi-annual discount rate

Where n is the number of semi-annual periods between the date of purchase and the date of each coupon payment

= (3% × $5000) × [1 − 1/(1 + 0.02)20] ÷ 0.02

= $157.10

The purchase price of the bond = Present value of redemption price + Present value of all coupon payments

= $2977.23 + $157.10 × 19.463 =$2977.23 + $3062.04

= $6039.27

Therefore, the purchase price of the bond is $6039.27.

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Consider the differential equation dy - = -2x + y with initial condition y(0) = 4. dx Use two equal steps of the Euler method to approximate y(1). (4 points)

Answers

Using the Euler method with two equal steps, we can approximate the value of y(1) for the given differential equation dy/dx = -2x + y with the initial condition y(0) = 4.

The Euler method is a numerical approximation technique used to solve ordinary differential equations. In this case, we need to approximate y(1) using two equal steps.

Given the differential equation dy/dx = -2x + y, we can rewrite it as dy = (-2x + y) dx. To apply the Euler method, we start with the initial condition y(0) = 4.

First, we need to calculate the step size, h, which is the distance between each step. Since we are using two equal steps, h = 1/2.

Using the Euler method, we can update the value of y using the formula y(i+1) = y(i) + h * f(x(i), y(i)), where f(x, y) represents the right-hand side of the differential equation.

Applying the formula, we calculate the values of y at each step:

Step 1: x(0) = 0, y(0) = 4, y(1/2) = 4 + (1/2) * [(-2*0) + 4] = 4 + 2 = 6.

Step 2: x(1/2) = 1/2, y(1/2) = 6, y(1) = 6 + (1/2) * [(-2*(1/2)) + 6] = 6 + 1 = 7.

Therefore, the Euler method with two equal steps approximates y(1) as 7 for the given differential equation with the initial condition y(0) = 4.

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The function y₁= x² cos (ln(x)) is a solution to the DE, x²y - 3xy + 5y = 0. Use the reduction of order formula to find a second linearly independent solution. I

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To find a second linearly independent solution to the differential equation x²y - 3xy + 5y = 0, we can use the reduction of order formula.

Given that y₁ = x² cos(ln(x)) is a solution to the equation, we can express it as y₁ = x²u(x), where u(x) is an unknown function to be determined.

Using the reduction of order formula, we differentiate y₁ to find y₁' and y₁''.

y₁' = 2x cos(ln(x)) - x² sin(ln(x))/x = 2x cos(ln(x)) - x sin(ln(x))

y₁'' = 2cos(ln(x)) - 2sin(ln(x)) - 2x cos(ln(x)) + x sin(ln(x))

Now, substitute y = y₁u into the differential equation:

x²(y₁''u + 2y₁'u' + y₁u'') - 3x(y₁'u + y₁u') + 5(y₁u) = 0

After simplification, we have:

2x³u'' - x³u' + 2x²u' - 2xu + 2x²u' - x²u - 3x³u' + 3x²u - 3xu + 5x²u = 0

Simplifying further, we get:

2x³u'' + 4x²u' + (6x² - 4x)u = 0

This equation can be simplified to:

x³u'' + 2x²u' + (3x² - 2x)u = 0

This is a second-order linear homogeneous differential equation in the variable u. To find a second linearly independent solution, we need to solve this equation for u.

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Use decimal number system to represent heptad number 306,.

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The heptad number 306 in the decimal number system is equivalent to the decimal number 145.

In the heptad (base-7) number system, each digit position represents a power of 7. The rightmost digit represents 7^0, the next digit represents 7^1, the next digit represents 7^2, and so on.
To convert the heptad number 306 to the decimal system, we multiply each digit by the corresponding power of 7 and sum the results.
Starting from the rightmost digit, we have:
6 * 7^0 = 6 * 1 = 6
0 * 7^1 = 0 * 7 = 0
3 * 7^2 = 3 * 49 = 147
Adding these values together, we get 6 + 0 + 147 = 153.
Therefore, the heptad number 306 is equivalent to the decimal number 145.

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A ball is thrown vertically upward with an initial velocity of 96 feet per second. The distances (in feet) of the ball from the ground after t seconds is s = 96t - 16:² (a) At what time t will the ball strike the ground? (b) For what time t is the ball more than 44 feet above the ground? CELL (a) The ball will strike the ground when tis 6 seconds. (b) The ball is more than 44 feet above the ground for the time t when

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(a) The ball will strike the ground after 6 seconds. (b) The ball is more than 44 feet above the ground for values of t greater than 2.75 seconds.

(a) To determine when the ball will strike the ground, we set the distance s equal to zero and solve for t. The equation is [tex]96t - 16t^2 = 0[/tex]. Factoring out t gives us t(96 - 16t) = 0. Solving for t, we find two solutions: t = 0 and t = 6. However, t = 0 represents the initial time when the ball was thrown, so we discard it. Therefore, the ball will strike the ground after 6 seconds.

(b) To find the time when the ball is more than 44 feet above the ground, we set the distance s greater than 44 and solve for t. The inequality is [tex]96t - 16t^2 > 44.[/tex] Rearranging the terms gives us [tex]16t^2 - 96t + 44 < 0[/tex]. Factoring out 4 gives us [tex]4(4t^2 - 24t + 11) < 0.[/tex] We can solve this quadratic inequality by finding the critical points, which are the values of t that make the inequality equal to zero. Using the quadratic formula, we find the critical points at t ≈ 1.5 and t ≈ 2.75. Since we want the ball to be more than 44 feet above the ground, we look for values of t greater than 2.75 seconds.

Therefore, the ball is more than 44 feet above the ground for values of t greater than 2.75 seconds.

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If a box with a square cross section is to be sent by a delivery service, there are restrictions on its size such that its volume is given by V = x²(135 - 5x), where x is the length of each side of the cross section (in inches). (a) Is V a function of x? Yes, V is a function of x. No, V is not a function of x. (b) If V = V(x), find V(11) and V(23). (If V is not a function of x, enter DNE.) V(11) = in ³ V(23) = in 3 (c) What restrictions must be placed on x (the domain) so that the problem makes physical sense? (Enter your answer using interval notation. If V is not a function of x, enter DNE.)

Answers

a)  Yes, V is a function of x.

b) V(11)  = 9680 in³ ; V(23) = 5290 in³

c) domain is [0, 27].

Given

V = x²(135 - 5x), where x is the length of each side of the cross section (in inches).

(a) Yes, V is a function of x.

To prove it, check whether each value of x gives a unique value of V.

If every value of x corresponds to a unique value of V, then it is a function of x.

(b) If V = V(x), V(11) and V(23) are :

To find V(11), substitute x = 11 in V(x) equation.

V(11) = 11²(135 - 5 * 11)

= 11²(80)

= 9680 in³

To find V(23), substitute x = 23 in V(x) equation.

V(23) = 23²(135 - 5 * 23)

= 23²(10)

= 5290 in³

(c) Since it is not possible to have a negative length of a side of a box, x cannot be negative.

Therefore, the domain must be x ≥ 0.

Also, the volume of a box cannot be negative, so we set V(x) ≥ 0.

Therefore,

x²(135 - 5x) ≥ 0

x(135 - 5x) ≥ 0

x(5x - 135) ≤ 0

x ≤ 0 or x ≤ 27

Therefore, the domain is [0, 27].

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Find a general solution to the differential equation. y''-y = -7t+8 The general solution is y(t) = (Do not use d, D, e, E, i, or I as arbitrary constants since these letters already have defined meanings.)

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The general solution to the given differential equation is y(t) = C₁eᵗ + C₂e⁻ᵗ + 7t - 8.

In the differential equation y'' - y = -7t + 8, we first find the complementary solution by solving the associated homogeneous equation y'' - y = 0. The characteristic equation is r² - 1 = 0, which has roots r₁ = 1 and r₂ = -1. Therefore, the complementary solution is y_c(t) = C₁eᵗ + C₂e⁻ᵗ, where C₁ and C₂ are arbitrary constants.

To find the particular solution, we assume a particular solution of the form y_p(t) = At + B, where A and B are constants. Substituting this into the original differential equation, we get -2A = -7t + 8. Equating the coefficients of t and the constants, we have -2A = -7 and -2B = 8. Solving these equations gives A = 7/2 and B = -4. Therefore, the particular solution is y_p(t) = (7/2)t - 4.

The general solution is then obtained by adding the complementary solution and the particular solution: y(t) = y_c(t) + y_p(t) = C₁eᵗ + C₂e⁻ᵗ + (7/2)t - 4. Here, C₁ and C₂ represent the arbitrary constants that can take any real values.

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Mark the following statements T/F, and explain your reason. The following matrices A and B are n x n. (1)If A and B are similar then A² - I and B² - I are also similar; (2)Let A and B are two bases in R". Suppose T: R → R" is a linear transformation, then [7] A is similar to [T]B; • (3) If A is not invertible, then 0 will never be an eigenvalue of A;

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(1) If A and B are similar, then A² - I and B² - I are also similar. -

True

If A and B are similar matrices, then they represent the same linear transformation under two different bases. Suppose A and B are similar; thus there exists an invertible matrix P such that P-1AP = B. Now, consider the matrix A² - I. Then, we have:

(P-1AP)² - I= P-1A²P - P-1AP - AP-1P + P-1IP - I

= P-1(A² - I)P - P-1(PAP-1)P

= P-1(A² - I)P - (P-1AP)(PP-1)

From the above steps, we know that P-1AP = B and PP-1 = I;

thus,(P-1AP)² - I= P-1(A² - I)P - I - I

= P-1(A² - I - I)P - I

= P-1(A² - 2I)P - I

We conclude that A² - 2I and B² - 2I are also similar matrices.

(2) Let A and B are two bases in R". Suppose T: R → R" is a linear transformation, then [7] A is similar to [T]B. - False

For A and B to be similar matrices, we need to have a linear transformation T: V → V such that A and B are representations of the same transformation with respect to two different bases. Here, T: R → R" is a linear transformation that maps an element in R to R". Thus, A and [T]B cannot represent the same linear transformation, and hence they are not similar matrices.

(3) If A is not invertible, then 0 will never be an eigenvalue of A. - False

We know that if 0 is an eigenvalue of A, then there exists a non-zero vector x such that Ax = 0x = 0.

Now, suppose A is not invertible, i.e., det(A) = 0. Then, by the invertible matrix theorem, A is not invertible if and only if 0 is an eigenvalue of A. Thus, if A is not invertible, then 0 will always be an eigenvalue of A, and hence the statement is False.

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Let a, b, c E N. Suppose that a and c are coprime, and that b and c are coprime. Prove that ab and c are coprime

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Using the method of contradiction, we first assumed that ab and c have a common factor d, which we then showed to be impossible, we proved that ab and c are coprime.

To prove that ab and c are coprime, where a, b, c ∈ N, where a and c are coprime and b and c are coprime, we will use contradiction.

Let us suppose that ab and c have a common factor, say d such that d > 1 and

d | ab and d | c.

Since a and c are coprime, we can say that

gcd(a,c) = 1.

Therefore, d cannot divide both a and c simultaneously.

Since d | ab,

we can say that d | a or d | b.

But d cannot divide a.

This is because, if it does, then it will divide gcd(a,c) which is not possible.

Therefore, d | b.

Let b = bx and c = cy,

where x and y are integers.

Now, d | b implies d | bx,

which further implies d | ax and

therefore, d | gcd(a,c).

But we know that gcd(a,c) = 1.

Therefore, d = 1.

Thus, we have arrived at a contradiction and hence we can conclude that ab and c are coprime.

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A company sells q iPhone cases per year at price p per case. The demand function is p = 200 − .05q. Find the elasticity of demand when the price is $52 per case. Do we expect raising the price lead to an increase in sales?

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The elasticity of demand when the price is $52 per case is 2. This means that a 1% increase in price will lead to a 2% decrease in demand. Therefore, we do not expect raising the price to lead to an increase in sales.

The elasticity of demand is a measure of how responsive consumers are to changes in price. In this case, the elasticity of demand is 2, which means that consumers are very responsive to changes in price. A 1% increase in price will lead to a 2% decrease in demand. Therefore, if the company raises the price, they can expect to sell fewer cases.

It is important to note that the elasticity of demand can vary depending on a number of factors, such as the availability of substitutes, the income of consumers, and the consumer's perception of the product. In this case, the company is selling iPhone cases, which are a relatively popular product. There are also a number of substitutes available, such as cases made by other companies. Therefore, the company can expect that the elasticity of demand will be relatively high.

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Use the rules of differentiation to find the derivative of the function. T y = sin(0) cos(0) 4 T y' = cos(x) + sin(x)

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The derivative of the function y = sin(0) cos(0) 4 is y' = cos(x) + sin(x).

To find the derivative of the given function y = sin(0) cos(0) 4, we can apply the rules of differentiation. Let's break down the function:

sin(0) = sin(0°) = sin(0) = 0

cos(0) = cos(0°) = cos(0) = 1

Using the constant multiple rule, we can pull out the constant factor 4:

y = 4 * (sin(0) * cos(0))

Now, applying the product rule, which states that the derivative of the product of two functions is given by the first function times the derivative of the second function plus the second function times the derivative of the first function, we have:

y' = 4 * (cos(0) * cos(0)) + 4 * (sin(0) * (-sin(0)))

Simplifying further:

y' = 4 * (cos²(0) - sin²(0))

Using the trigonometric identity cos²(x) - sin²(x) = cos(2x), we have:

y' = 4 * cos(2 * 0)

Since cos(0) = 1, we have

y' = 4 * 1 = 4

Therefore, the derivative of the function y = sin(0) cos(0) 4 is y' = cos(x) + sin(x).

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A wooden cube with painted faces is sawed up into 27 little cubes, all of the same size. The little cubes are then mixed up, and one is chosen at random. Let the random variable X denote the number of faces painted on a randomly chosen little cube. (a) Write down the distribution of X. (That is, either specify the PMF of X using a table or draw its graph; if you choose to draw the graph, make sure to mark it properly and clearly.) (b) What is pX (2)? (c) Calculate E [X]. (d) Calculate Var(X).

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In this problem, we consider a wooden cube that is sawed up into 27 little cubes, all of the same size. The little cubes are mixed up, and we are interested in the random variable X, which denotes the number of faces painted on a randomly chosen little cube.

We calculated pX(2) to be 12/27, the expected value E[X] to be 1.481, and the variance Var(X) to be 0.768.

(a) The random variable X can take on values from 0 to 3, representing the number of faces painted on a little cube. The distribution of X is as follows:

X = 0 with probability 1/27 (since there are 27 little cubes with no painted faces)

X = 1 with probability 6/27 (since there are 6 little cubes with one painted face)

X = 2 with probability 12/27 (since there are 12 little cubes with two painted faces)

X = 3 with probability 8/27 (since there are 8 little cubes with three painted faces)

(b) pX(2) represents the probability that X takes on the value 2. From the distribution of X, we can see that pX(2) = 12/27.

(c) To calculate E[X] (the expected value of X), we multiply each possible value of X by its corresponding probability and sum them up:

E[X] = 0 * (1/27) + 1 * (6/27) + 2 * (12/27) + 3 * (8/27) = 1.481.

(d) To calculate Var(X) (the variance of X), we need to find the squared deviation of each value of X from its expected value, multiply it by its corresponding probability, and sum them up:

Var(X) = (0 - 1.481)² * (1/27) + (1 - 1.481)² * (6/27) + (2 - 1.481)² * (12/27) + (3 - 1.481)² * (8/27) = 0.768.

In conclusion, the distribution of X shows the probabilities for each value of the number of painted faces on a randomly chosen little cube.

We calculated pX(2) to be 12/27, the expected value E[X] to be 1.481, and the variance Var(X) to be 0.768.

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Compute the values of dy and Ay for the function y = ² + 5x given z = 0 and Az =dz = 0.02. 21 Round your answers to four decimal places, if required. You can use a calculator, spreadsheet, browser, etc. to calculate dy and Ay. dy = Number Ay = Number

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To compute the values of dy and Ay, we need to differentiate the function y = x² + 5x with respect to x and evaluate it at the given values.

First, let's find the derivative of y with respect to x:

dy/dx = 2x + 5

Now, we can calculate the values of dy and Ay:

dy = (dy/dx) * dz = (2x + 5) * dz = (2(0) + 5) * 0.02 = 0.1

Ay = dy * Az = 0.1 * 0.02 = 0.002

Therefore, the values of dy and Ay are dy = 0.1 and Ay = 0.002, respectively.

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If f(x) = 7* and g(x) = log,x, then f(g(x)) = x. Sofia says the domain of this composed function [4] would be {x E R). Is she correct? Explain why or why not in detail.

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Sofia is incorrect in stating that the domain of the composed function f(g(x)) = x is {x ∈ R}. The domain of the composed function depends on the individual domains of the functions f(x) and g(x). In this case, the domain of the logarithmic function g(x) = log(x) is restricted to positive real numbers, Therefore, the domain of the composed function f(g(x)) = x is restricted to positive real numbers.

To determine the domain of the composed function f(g(x)), we need to consider the domain of the inner function g(x) and ensure that the values obtained from g(x) fall within the domain of the outer function f(x).

The logarithmic function g(x) = log(x) is defined only for positive real numbers. Therefore, the domain of g(x) is x > 0, or (0, ∞).

The constant function f(x) = 7 is defined for all real numbers, as there are no restrictions on its domain.

When we compose f(g(x)), we substitute g(x) into f(x), which gives us f(g(x)) = f(log(x)).

Since the domain of g(x) is x > 0, we need to ensure that the values obtained from log(x) fall within the domain of f(x). However, the constant function f(x) = 7 is defined for all real numbers, including positive and non-positive values.

Therefore, the domain of the composed function f(g(x)) = x is x > 0, or (0, ∞). Sofia's statement that the domain is {x ∈ R} is incorrect.

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Find the arc length of the curve below on the given interval. y 1 X for 1 ≤ y ≤3 4 8y² The length of the curve is (Simplify your answer.)

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The problem involves finding the arc length of the curve defined by y = 8y² on the interval 1 ≤ y ≤ 3. The length of the curve can be calculated using the arc length formula.

To find the arc length of the curve defined by y = 8y² on the interval 1 ≤ y ≤ 3, we can use the arc length formula. The arc length formula allows us to calculate the length of a curve by integrating the square root of the sum of the squares of the derivatives of x and y with respect to a common variable (in this case, y).

First, we need to find the derivative of x with respect to y. By differentiating y = 8y² with respect to y, we obtain dx/dy = 0. This indicates that x is a constant.

Next, we can set up the arc length integral. Since dx/dy = 0, the arc length formula simplifies to ∫ √(1 + (dy/dy)²) dy, where the integration is performed over the given interval.

To calculate the integral, we substitute dy/dy = 1 into the formula, resulting in ∫ √(1 + 1²) dy. Simplifying this expression gives ∫ √2 dy.

Integrating √2 with respect to y over the interval 1 ≤ y ≤ 3 gives √2(y) evaluated from 1 to 3. Thus, the arc length of the curve is √2(3) - √2(1), which can be further simplified if needed.

The main steps involve finding the derivative of x with respect to y, setting up the arc length integral, simplifying the integral, and evaluating it over the given interval to find the arc length of the curve.

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If f'(x) has a minimum value at x = c, then the graph of f(x) has a point of inflection at X = C. True False

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The statement "If f'(x) has a minimum value at x = c, then the graph of f(x) has a point of inflection at x = c" is false.

A point of inflection occurs on the graph of a function when the concavity changes. It is a point where the second derivative of the function changes sign. However, the existence of a minimum value for the derivative of a function at a particular point does not necessarily imply a change in a concavity at that point.

For example, consider the function f(x) = x³. The derivative f'(x) = 3x² has a minimum value of 0 at x = 0, but the graph of f(x) does not have a point of inflection at x = 0. In fact, the graph of f(x) is concave up for all values of x, indicating that there is no change in concavity and no point of inflection.

Therefore, the presence of a minimum value for the derivative does not guarantee the existence of a point of inflection on the graph of the original function. Hence, the statement is false.

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The coefficient of static friction between the person and the wall is s, and kinetic friction k. The person is only touching the wall, not touching the floor. The person is only touching the wall, not touching the floor. Lx a) Draw a free body diagram for the person when they are on the left side of the cylinder, as indicated by the black circle in the diagram. Clearly label all forces. b) In what direction does the acceleration of the person point and what is its magnitude (as indicated by the black circle in the diagram)? c) The speed is constant. Why is the acceleration not zero? Briefly explain. No equations! d) What is the magnitude of the normal force of the wall on the person? 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How much gain (loss) should Vorst record in 2020 on the disposal of Asset C?a.$(2,800)b.$(5,600)c.$2,800d.$(8,400) a network that covers a city or a suburb is called a ________. after the plaintiff has presented her case, the defendant may be granted a the spread of an idea or innovation from its source If a company has an unappealing low market share of entry-level cameras sales in North America because it is being outcompeted by various rival companies, then company managers shouldA) increase the number of entry-level camera models offered in North America to 5, increase the level of quarterly advertising in north America to an amount that is 10% higher than the highest amount spend by any rival company in the prior year B)Boost the amount of tech support provided to the north America customers by 50% and increase the warranty period on entry-level cameras to a minimum of 2 yearsC) immediately review the companies competitive weaknesses in NA as shown at the bottom of the Competitive intelligence report and explore the merits of actions to correct most or all of them, in addition, they should take actions that they believe will result in the company having at least two important competitive strengths vis-a-vis its north American rivals in the upcoming decision roundD) Raise the P/Q rating on entry level cameras offered for sale in north America for 4 stars or higher and cut the companies prices for the entry level cameras in the NA to about 5$ below the prior years industry average price in NAE) Consult the benchmarking data in the latest Glo-Bus statistical review to see if any of its entry level costs are out of line and consider cutting the company's entry level camera process in north America to levels that match or beat entry level camera process being charged by any other company in the NA region. The average individual in a country earns an annual salary of $62,000, of which $24,800 is spent on housing, $11,160 on food, $11,1 on transportation, and $14,880 on other goods and services. Suppose the government in this country mandates that all salaries an the prices of all goods and services be reduced by 40 percent. Instructions: Enter your answers as a whole number. a. How much does the average individual now earn? $ b. How much does the average individual now spend on housing, food, transportation, and other goods and services? Housing: \$ Food: \$ Transportation: $ Other goods and services: $ c. What happened to the average individual's real salary? It has decreased. It has increased. It has not changed. The following financial information pertains to the results of Future Islamic Bank at the end of 2021: Average account balances: Banks policy states that for liquidity purposes, the bank keeps the following percentages in cash of each fund to meet expected withdrawals: The bank's policy states that in profitable years the accounts profit equalization reserve the investment risk reserve should be credited by a maximum of 7% and 3%, respectively. The board decides on the amount transferred to these accounts at the end of each year. In 2020 the board decided to apply the maximum percentages stated in the policy. The profit sharing ratio is 30% to the clients (investors). C. Helium is a gas used to fill balloons.it is present in the air in very small quantitie.diffusion can be used to separate it from the air. air at 1000 degrees Celsius is on one side of a porous barrier.the air which passes through the barrier has a large amount of helium in it. why does the air on the other side of the barrier contain more helium?