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: we solve this LLP by  graphical methods.

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A: Note:As our company  guidelines we are supposed to answer only first 3 sub-parts. kindly re-post…

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