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Math Help - intervals of increasing/ decreasing

  1. #1
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    intervals of increasing/ decreasing

    for f(x) = x^{1/3}
    increasing: (-∞, ∞)
    Decreasing: ?
    for decreasing i think its none. idk
    Last edited by yoman360; August 16th 2009 at 06:54 PM.
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  2. #2
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    What exactly is your function?

    Did you mean y=x^{\frac{1}{3}} ?

    It will be increasing on \frac{dy}{dx}>0 and decreasing on \frac{dy}{dx}<0
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  3. #3
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    Quote Originally Posted by pickslides View Post
    What exactly is your function?

    Did you mean y=x^{\frac{1}{3}} ?

    It will be increasing on \frac{dy}{dx}>0 and decreasing on \frac{dy}{dx}<0
    I haven't learned that dy/dx stuff yet so that doesn't make sense to me right now. And yes its f(x)= x^{1/3}
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  4. #4
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    Quote Originally Posted by yoman360 View Post
    for f(x) = x^{1/3}
    increasing: (-∞, ∞)
    This is correct therefore it cannot be decreasing.
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