Find the global maximum and minimum of f (x, y) = (2² – 1)(y² + y) www on each of the following sets or explain why it does not exist. a. S= {(x, y) ER : -1 < x, y, < 1}; b. R2.

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A: Solution:-

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A: Let's find.

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Q: the doi n ain of the functions

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