hi

am solving past exams to be prepared for my exam next week

i stopped on this problem :

let f(x)=x^4 + x^3 + 1 , where x in [0,2] let g(x) = f^-1 (x)

if h(x) = f(2 g(x)) , find h`(3)??

its easy problem, i know all what i know is how to find h`(x) ??

then it will be easy

help plz !!