4. Consider the function g(r, y) = re 2r2-2y. (a) Determine and classify the critical points of g(r, y). (b) Plot the surface z = g(a, y) in the range (-2,2] x (-2, 2) showing the critical points using red solid circles.

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A: Topic:- application of derivatives Note :- as per our guideline if more than one question uploaded…

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