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Math Help - Differentiation help

  1. #1
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    Differentiation help

    Hi im a bit stuck on this question.



    Im fairly good at calculus and can integrate and differentiate etc, but i think its just the wording of the question. I don't really understand what it is asking me to do. Is it to do with making dy/dx < 0 or something? Could someone please explain?
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  2. #2
    Bar0n janvdl's Avatar
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    Quote Originally Posted by nugiboy View Post
    Hi im a bit stuck on this question.



    Im fairly good at calculus and can integrate and differentiate etc, but i think its just the wording of the question. I don't really understand what it is asking me to do. Is it to do with making dy/dx < 0 or something? Could someone please explain?
    I think they're asking for what values of x will y increase.

    EDIT: So if that equation is the gradient, then that gradient must be greater than 0, to increase f(x)
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  3. #3
    Member SengNee's Avatar
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    Quote Originally Posted by nugiboy View Post
    Hi im a bit stuck on this question.



    Im fairly good at calculus and can integrate and differentiate etc, but i think its just the wording of the question. I don't really understand what it is asking me to do. Is it to do with making dy/dx < 0 or something? Could someone please explain?


    dy/dx>0
    x^2-6x>0
    x(x-6)>0

    x>0 , x>6

    Therefore,
    {x:x<0}U{x:x>6}

    I not sure...
    Last edited by SengNee; January 9th 2008 at 03:22 AM. Reason: Correction...
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  4. #4
    Bar0n janvdl's Avatar
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    Quote Originally Posted by SengNee View Post
    I not sure...
    I quite agree with that solution.
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  5. #5
    Member SengNee's Avatar
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    Quote Originally Posted by janvdl View Post
    I quite agree with that solution.
    Thanks you.
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