Graph the function. Determine the symmetry, if any, of the function.y = 5
A. No symmetry
B. No symmetry
C. Symmetric about the x-axis
D. Symmetric about the x-axis
Answer: B
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The scalar function div(grad f) = ? ? ? f (also written ?2f) is called the Lapalacian, and the function f satisfying ?2f = 0 is said to be harmonic. ?2f = fxx + fyy + fzz. Find ?2f for the following function and decide if it is harmonic.f(x, y, z) = (x3 + y2 + z)2
A. harmonic B. not harmonic
Set up the iterated integral for evaluating 
Dover the given region D.D is the solid right cylinder whose base is the region between the circles 
and 
and whose top lies in the plane 
.
A. 
B. 
C. 
D. 
Solve the problem.Mary and her brother John collect foreign coins. Mary has twice the number of coins that John has. Together they have 120 foreign coins. Find how many coins Mary has.
A. 80 coins B. 16 coins C. 72 coins D. 40 coins
Estimate the product.28.4 × 2.7
A. 90 B. 80 C. 77 D. 9