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7 . Let f(x) = - 10x + In(x ). Domain is x > 0. You are given x2 - 10x + 9 x2 -

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7 . Let f(x) = - 10x + In(x ). Domain is x > 0. You are given x2 - 10x + 9 x2 - 9 f'(x) = f" (x ) = (a) Find the critical numbers, intervals of increase and decrease, the local minimum and maximum. (b) Study the concavity and the points of inflection

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