For (x, y), find all values of x and y such that x (x, y) =

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For ƒ(x, y), find all values of x and y such that ƒx(x, y) = 0 and ƒy(x, y) = 0 simultaneously.

f(x, y) = x² + 4xy + y² - 4x + 16y + 3

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Calculus

ISBN: 9781285057095

10th Edition

Authors: Ron Larson, Bruce H. Edwards

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