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Math Help - Differentiation

  1. #1
    Newbie
    Joined
    Apr 2010
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    4

    Differentiation

    I need help differentiating the following. I am not sure if what I have done is correct.

    1. \frac{d}{dx}\frac{1}{1+\sin(\cos x)}

    =\frac{1}{[1 + \sin(\cos x)]^2}[\cos(\cos x)\sin x]

    2. \frac{d}{dx} \log (1 + \sin(1 + \tan x))

    = \frac{1}{1 + \sin(1 + \tan x)}\cos(1 + \tan x)\sec^2 x

    Could someone tell me if what I have done is correct or not.
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  2. #2
    Senior Member nikhil's Avatar
    Joined
    Jun 2008
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    287

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    correct
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