The question is find dy/dx of .
which I rewrote as
then, using the chain rule, .
But the book gives the answer .
Is my answer wrong? Or do I just need to simplify it further?
Never mind, I've got a new answer that is right, and I checked it by graphing both my new equation and the equation the books gives w/ my TI-89 and the graphs are identical.
Now, the real derivative I got is .
Now I just need to convert this into the equation the book wants, which is .
I'm guessing its a random trig identity...but can't find which one