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5-25.

Use the graphs of and below to determine the -values of all local minima, maxima, and points of inflection. Homework Help ✎

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will be increasing where is positive, and vice versa.
will be concave up where has positive slopes, and vice versa.

Local max at ; changes from positive to negative.
Inflection points at ; changes slope.
Local min at changes from negative to positive.

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See the hint in part (a).