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Math Help - differentiable function

  1. #1
    Senior Member euclid2's Avatar
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    differentiable function

    suppose that f is a differentiable function with the derivative f'(x)=(x-1)(x+2)(x+3). determine the values of x for which the function f is increasing and the values for x for which the function is decreasing
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  2. #2
    Super Member Deadstar's Avatar
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    Should just be a simple case of determining f'(x) near 1,-2 and -3.

    I imagine there's an easier or probably a more rigorous approach but just test a value in each of the intervals (-\infty, -3), (-3,-2) , (-2,1), (1,\infty)
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