Find the second-order partial derivative.Find fyy when f(x,y) = 8x3y - 7y2 + 2x.
A. -14
B. 48xy
C. -28
D. 24x2
Answer: A
Mathematics
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Find the vertical asymptotes, if any, of the graph of the rational function.f(x) = 
A. x = 2, x = -2 B. no vertical asymptote C. x = -2 D. x = 2
Mathematics
Divide, if possible. Assume any variable in the denominator is nonzero.
A. x B. Undefined C. 0 D. 1
Mathematics
Determine whether the two matrices are inverses of each other by computing their product.
and 
A. No B. Yes
Mathematics
Simplify the exponential expression. Write the result using only positive exponents.
A. y2
B. y12
C. 
D. y8
Mathematics