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# Calculus graphing. Urgent help appreciated! [closed] Anonymous

A math student writes a proof of the derivative of a certain trigonometric function. The last line she writes before stating her conclusion is...

d/d?(sin(?+?/2))=cos(?+?/2)

These are the graphs of sin(?+?/2) and cos(?+?/2)

sin(?+?/2)= http://www.wolframalpha.com/input/?i=...

cos(?+?/2)= http://www.wolframalpha.com/input/?i=...

Hence, write the statement of her conclusion beginning with the word, "Therefore...".

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## Comments

I'll just point out that the down votes are likely because this does not seem to be a [Sage](http://www.sagemath.org)-related question. If you can update it appropriately, please do, otherwise this question should be closed as not relevant.

## 1 Answer

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Nice homework exercise. I'll have to give that one to my calculus students next time...

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Asked: 2013-05-18 04:41:43 +0200

Seen: 121 times

Last updated: May 18 '13