Calculus graphing. Urgent help appreciated! [closed]
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...".
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.