Question

f(x)=8^(5sin^2(x+1)) then f'(pi/4)

Answer 1

Its a derivative.

Answer 2

actually i think you need the derivative
take the log

Answer 3

sorry

Answer 4

\[\frac{d}{dx}b^x=b^x\ln(b)\] so by the chain rule
\[\frac{d}{dx}b^{f(x)}=f'(x)b^{f(x)}\ln(b)\]