I'm supposed to find the absolute max and min for f(x,y)=sin(x) +cos(y) on the rectangle defined by 0<=x<=2*pi 0<=y<=2*pi. Can someone point me in the right direction. I got the critical points but i dont know what to do after that.(adsbygoogle = window.adsbygoogle || []).push({});

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# Global extrema question

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