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Math Help - Partial derivation

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    Partial derivation

    What's the following partial derivation:
    Attached Thumbnails Attached Thumbnails Partial derivation-partialderivative.gif  
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    is up to his old tricks again! Jhevon's Avatar
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    Quote Originally Posted by totalnewbie View Post
    What's the following partial derivation:
    z = (sinx)^cosy, we want dz/dx. this means we treat y as a constant and differentiate with respect to x

    => dz/dx = cosy(sinx)^(cosy - 1) * (cosx)
    => dz/dx = cosxcosy(sinx)^(cosy - 1)
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