Question: In Exercises assume that is differentiable for all x. The signs of ' are as follows. Supply the appropriate inequality sign for the indicated
In Exercises assume that ƒ is differentiable for all x. The signs of ƒ' are as follows.

Supply the appropriate inequality sign for the indicated value of c.
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f'(x) > 0 on (-, -4) f'(x) < 0 on (-4, 6) f'(x) > 0 on (6, )
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