2.99
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The graph of the first derivative f' of a function f is shown.

(a). On what intervals is f increasing? Explain.
(b). At what values of x does f have a local maximum or minimum? Explain.
(c). On what intervals is f concave upward or concave downward? Explain.
(d). What are the -coordinates of the inflection points of f? Why?

y. y= f'x) + 3 5 9 *