The Second Derivative Test for Local Maxima and Minima says: a. has a local maximum value

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The Second Derivative Test for Local Maxima and Minima says:


a. ƒ has a local maximum value at x = c if ƒ′(c) = 0 and ƒ″(c)


b. ƒ has a local minimum value at x = c if ƒ′(c) = 0 and ƒ″(c) > 0.


To prove statement (a), let P = (1/2) |ƒ″(c)|. Then use the fact thatimage


to conclude that for some δ > 0,image


Thus, ƒ′(c + h) is positive for -δ

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Thomas Calculus Early Transcendentals

ISBN: 9780321884077

13th Edition

Authors: Joel R Hass, Christopher E Heil, Maurice D Weir

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