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Math Help - Derivative

  1. #1
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    Derivative

    Find the derivative for these:

    y
    = 6xekx

    So for this I'm getting 6-ke^x


    y =
    5 + 2e8x
    (square root the whole equation)
    This one I'm not entirely sure how to do, maybe (a-b)^2?

    Last edited by Oldspice1212; October 23rd 2012 at 07:34 PM.
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  2. #2
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    Re: Derivative

    Your question's pretty unclear, but I'm assuming you want to find dy/dx?

    For the first one, you have to use the product rule:
    \frac{dy}{dx} = 6(e^{-kx} + x(e^{-kx})(-k)), then simplify.

    The second one's just a chain rule problem. I don't know what you're referring to when you say (a-b)^2...
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  3. #3
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    Re: Derivative

    Sorry about that, it's fixed, yes it was to find the derivative for these questions :P

    So is the first one e^-kx(6-6kx)?
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