In Exercises 77 and 78, find the point(s) on the surface at which the tangent plane is

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In Exercises 77 and 78, find the point(s) on the surface at which the tangent plane is horizontal.

z = 2xy + 3x + 5y

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Calculus Of A Single Variable

ISBN: 9781337275361

11th Edition

Authors: Ron Larson, Bruce H. Edwards

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