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Brrunno [24]
4 years ago
6

Golf socks cost the sports store $11 per pair. How many pairs of socks can the store buy for $1,958? Use repeated subtraction to

solve.   A. 178   B. 187   C. 188   D. 197
Mathematics
1 answer:
Jobisdone [24]4 years ago
7 0
A. Is the correct answer
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Determine whether each of the following functions is a solution of laplace's equation uxx uyy = 0.
ratelena [41]

Both functions are the solution to the given Laplace solution.

Given Laplace's equation: u_{x x}+u_{y y}=0

  • We must determine whether a given function is the solution to a given Laplace equation.
  • If a function is a solution to a given Laplace's equation, it satisfies the solution.

(1) u=e^{-x} \cos y-e^{-y} \cos x

Differentiate with respect to x as follows:

u_x=-e^{-x} \cos y+e^{-y} \sin x\\u_{x x}=e^{-x} \cos y+e^{-y} \cos x

Differentiate with respect to y as follows:

u_{x x}=e^{-x} \cos y+e^{-y} \cos x\\u_{y y}=-e^{-x} \cos y-e^{-y} \cos x

Supplement the values in the given Laplace equation.

e^{-x} \cos y+e^{-y} \cos x-e^{-x} \cos y-e^{-y} \cos x=0

The given function in this case is the solution to the given Laplace equation.

(2) u=\sin x \cosh y+\cos x \sinh y

Differentiate with respect to x as follows:

u_x=\cos x \cosh y-\sin x \sinh y\\u_{x x}=-\sin x \cosh y-\cos x \sinh y

Differentiate with respect to y as follows:

u_y=\sin x \sinh y+\cos x \cosh y\\u_{y y}=\sin x \cosh y+\cos x \sinh y

Substitute the values to obtain:

-\sin x \cosh y-\cos x \sinh y+\sin x \cosh y+\cos x \sinh y=0
The given function in this case is the solution to the given Laplace equation.

Therefore, both functions are the solution to the given Laplace solution.

Know more about Laplace's equation here:

brainly.com/question/14040033

#SPJ4

The correct question is given below:
Determine whether each of the following functions is a solution of Laplace's equation uxx + uyy = 0. (Select all that apply.) u = e^(−x) cos(y) − e^(−y) cos(x) u = sin(x) cosh(y) + cos(x) sinh(y)

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2 years ago
Solve the system for x and y.
lapo4ka [179]

Answer:

C is the answers for the question

Step-by-step explanation:

please give me brainlest

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3 years ago
The graph of an inverse is the reflection of the graph of the function over the line ___
Zepler [3.9K]
The line is y = x also called the diagonal.
5 0
4 years ago
Read 2 more answers
3112 was rounded to the nearest one.<br> What is the lower bound?
grin007 [14]

Answer:

3111.5.

Step-by-step explanation:

3112 - 0.5 = 3111.5.

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3 years ago
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