I was using the product rule to fine the derivative of a problem in my textbook:
f(x) = sqr root(2+sinx)
My answer is: -(1/2)cosx(2+sinx)^-(1/2)
The book answer is: (cosx) / 2 * sqr root(2+sinx)
Is my answer correct? Is my answer just not simplified?
The reason there's a negative sign there is because (from what I know, which isn't much)
The derivative of sinx is -cosx
wait...or is it???
the derivative of cosx is -sinx. maybe I mixed that up.
The derivative of sinx is just cosx
If you ignore that small fault, does my answer say the same thing the book answer says?
Thanks for the fast response btw