Here's the question you clicked on:
bmelyk
just looking for another answer to be checked!
Use the functions given below to determine the following. f(u) = 3u^4 + 4u g(x) = cos(x)
f (g(x)) =\[3\cos^4x+4cosx\] f ' (u) = 12u^3+4 f ' (g(x)) = 12cos(x)^3+4 g'(x)=-sinx (f compose g) '(x) =-12cos(x)^3*sin(x)-4*sin(x)
all of them? awesome! haha.