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Thread: Partial derivative please help

  1. November 11th 2008, 07:53 PM #1
    cowboys111
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    Partial derivative please help

    Hi, im trying to find the partial dervative with respect to x of:
    ln(sqrt(x^2+y^2+z^2)). Im really stuck, can someone please show me how you would work this out? Thank you.
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  2. November 11th 2008, 11:56 PM #2
    Peritus
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    <br /> \frac{\partial }<br /> {{\partial x}}\frac{1}<br /> {2}\ln \left( {x^2 + y^2 + z^2 } \right) = \frac{x}<br /> {{x^2 + y^2 + z^2 }}
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