If the sign combination of f and f changes from ++ to + at x = c, then (choose the
Chapter 4, Problem 2(choose chapter or problem)
If the sign combination of f and f changes from ++ to + at x = c, then (choose the correct answer): (a) f (c) is a local min. (b) f (c) is a local max. (c) (c, f (c)) is a point of inflection. 3.
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