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Math Help - Help required with differentiation

  1. #1
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    Mar 2007
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    Help required with differentiation

    Hi all!

    I have to differentiate the following function using the Product Rule:

    f(x) = (cos x)e^-x sqrt 3

    Here are my workings so far:

    g(x)=(cos x) h(x)=e^-x sqrt 3

    f ' (x) = g ' (x) h(x) + g(x) h' (x)

    = (-sin x)e^-x sqrt 3 + (cos x)-e^-x sqrt 3

    From here I do not know how to proceed further and am not sure whether above working is correct.

    TIA
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  2. #2
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    Re:

    Re:
    Attached Thumbnails Attached Thumbnails Help required with differentiation-derivative.gif  
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  3. #3
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    Thanks but.....

    Thanks for your help. However the sqrt 3 is part of the e^-x sqrt3.

    Thanks!
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  4. #4
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    Re:

    Quote Originally Posted by tigerdivision View Post
    Hi all!

    I have to differentiate the following function using the Product Rule:

    f(x) = (cos x)e^-x sqrt 3

    Here are my workings so far:

    g(x)=(cos x) h(x)=e^-x sqrt 3

    f ' (x) = g ' (x) h(x) + g(x) h' (x)

    = (-sin x)e^-x sqrt 3 + (cos x)-e^-x sqrt 3

    From here I do not know how to proceed further and am not sure whether above working is correct.

    TIA
    RE:
    Attached Thumbnails Attached Thumbnails Help required with differentiation-derivative.gif  
    Follow Math Help Forum on Facebook and Google+

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