Find the relative maximum and minimum values and the saddle points if they exist.f(x, y) = e-(x2 + y2 - 8y)
A. Relative maximum = e16, relative minimum = e-16
B. No relative extremum or saddle points
C. Relative maximum = e16
D. Saddle point = 
Answer: C
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Use the graph of 
to write an equation for the function whose graph is shown.
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?
A. ?
B. 
C. 
D. 
E. None of the above