In Exercises, both first partial derivatives of the function f (x, y) are zero at the given

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In Exercises, both first partial derivatives of the function f (x, y) are zero at the given points. Use the second-derivative test to determine the nature of f (x, y) at each of these points. If the second-derivative test is inconclusive, so state.

f (x, y) = 3x² - 6xy + y³ - 9y; (3, 3), (-1, -1)

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Calculus And Its Applications

ISBN: 9780134437774

14th Edition

Authors: Larry Goldstein, David Lay, David Schneider, Nakhle Asmar

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Question Posted: Mar 28, 2023 01:35 AM

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In Exercises, both first partial derivatives of the function f (x, y) are zero at the given

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fx y 3r 6xy y 9y af 6 2f 2 22f 12 6 af Dxy 6x3y 9 ...View the full answer

Calculus And Its Applications

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