Multiply.
A. 855,456
B. 95,676
C. 854,049
D. 19,698
Answer: A
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Determine whether the given function satisfies Laplace's equation.f(x, y) = cos (x) sin (-y)
A. Yes B. No
Use a power regression model for the following data to answer the following question. If x is multiplied by 4, what is the effect on y? x 1 3 4 7 8 y 13.01 2.72 2.43 1.49 1.17?
A. y is multiplied by 2.47. B. y is multiplied by 2.71. C. y is multiplied by 2.37. D. y is unchanged.
Find the Maclaurin series for f (x) using the definition of the Maclaurin series.
f(x) = x cos(4x)
Solve the problem.A railroad tunnel is shaped like a semi-ellipse. The height of the tunnel at the center is 42 ft and the vertical clearance must be 21 ft at a point 18 ft from the center. Find an equation for the ellipse. 
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1