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Find the derivative of $2^{\tan(1/x)}$. I know that I should replace $\frac1x$ with $u$ and such, but then I can't continue it...

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    Derivative with respect to what?2012-11-14
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    Oh sorry,it is 2^tg(1/x)2012-11-14
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    @ctype.h: If you are going to bump lots of old questions to the front page merely to fix the grammar, could you please limit this to about five edits a day or so? See [this meta discussion](http://meta.math.stackexchange.com/q/5068/856). Right now I cannot tell new questions from old ones on the front page.2012-11-22
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    @RahulNarain Sorry, I was not aware that it would be problematic. I will scale down the editing.2012-11-22

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