In Exercises 7786, find the four second partial derivatives. Observe that the second mixed partials are equal.

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In Exercises 77–86, find the four second partial derivatives. Observe that the second mixed partials are equal.

z = x4 - 3x2y2 + y4

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Calculus Of A Single Variable

ISBN: 9781337275361

11th Edition

Authors: Ron Larson, Bruce H. Edwards

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