Question: Find the absolute maximum and absolute minimum of the functionf(x,y)=2x3+y4 on the region {(x,y)|x2+y2?4}. If the absolute max or min occurs at multiple points list

Find the absolute maximum and absolute minimum of the functionf(x,y)=2x3+y4 on the region {(x,y)|x2+y2?4}.

If the absolute max or min occurs at multiple points list themall, separated by commas.

Please shows the steps as clear as possible. Thank you.

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