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OpenStudy (anonymous):
Find the absolute extrema of sinx + cosy on the interval -pi ≤ x ≤ pi, -pi/2 ≤ y ≤ pi/2? I know you have to take derivatives, find critical points and boundaries, and identify the extrema, but I have no idea how?
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OpenStudy (anonymous):
cos(x)-sin(x)=0 |dw:1386718286471:dw|
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