Multiple Choice
Find the absolute maximum and absolute minimum values of f(x , y) = cos(x) + cos(y) - cos(x + y) - 1 on the closed square region bounded by the straight lines x = 0, y = 0, x = , and y = .
A) absolute minimum 0, absolute maximum
B) absolute minimum -4, absolute maximum - 1
C) absolute minimum -4, absolute maximum
D) absolute minimum -2, absolute maximum 0
E) absolute minimum -4, no absolute maximum
Correct Answer:

Verified
Correct Answer:
Verified
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