Find all points (x, y) where f (x, y) has a possible relative maximum or minimum. Then,

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Find all points (x, y) where f (x, y) has a possible relative maximum or minimum. Then, use the second-derivative test to determine, if possible, the nature of f (x, y) at each of these points. If the second-derivative test is inconclusive, so state.

f(x, y) = -2x2 + 6xy - 17y2 - 4x + 6y

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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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