Find the volume of the described solid.The solid lies between planes perpendicular to the x-axis at x = -6 and x = 6. The cross sections perpendicular to the x-axis between these planes are squares whose diagonals run from the semicircle y = -  to the semicircle y = .

A.
B.
C.
D.


Answer: A

Mathematics

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Find the center of mass of a thin plate of constant density covering the given region.The region bounded by y = x2 and y = 9

A.  = 0,  = 
B.  = 0,  = 15
C.  = 0,  = 
D.  = 0,  = 

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Divide using distribution.

A. 8x4 + 4x - 9x2
B. 4x4 + 2x3 - 
C. 8x2 + 4x - 9
D. 8x4 + 4x3 - 9

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Graph the function.y = -3 cot (2x)

A.

B.

C.

D.

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The graph of a function f is given. On the same axes, sketch the graph of f-1. 

A.

B.

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