1.

The maximum value of the function is?
f(x, y) = sin(x).cos(2y).cos(x + 2y) + sin(2y).cos(x + 2y).cos(x) in the region x=0; y=0; x+2y = 3

A. 90
B. cos(1)
C. sin(1).cos(1)
D. sin(3).cos(3)
Answer» E.


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