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Math Help - Differentiate with Respect

  1. #1
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    Differentiate with Respect

    Please can you differentiate this equation with respect to q1.

    c= 1

    Here is the equation:

    P1= (20q1)-(1/10q1^2)-(1/10q1q2)-(q1c)

    Thanks
    Last edited by IronMan; October 26th 2009 at 06:35 PM.
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  2. #2
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     P_1= 20q_1 - \frac{1}{10q_1^2} - \frac{1}{10q_1q_2} - q_1c

     P_1= 20q_1 - 10q_1^{-2} - 10q_1^{-1}q_2^{-1} - q_1c

    You need you use

    y=x^n \Rightarrow \frac{dy}{dx}= nx^{n-1}


    treat q_2 as a constant
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