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The figure below shows the graph of f ', the derivative of the function f, on the closed interval from x

= -2 to x = 6. The graph of the derivative has horizontal tangent lines at x = 2 and x = 4.



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for local maximum , f'(x) = 0 and before that value of x , f' should be positive and after that f'(x) should be negative , in... View the full answer

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