If f(x)=x^5+2x+1, then (f^-1)'(4)=?
(f^-1)(4) = 1
(f^-1)'(4) = 1/f'(1) = 1/(5+2) = 1/7
wikipedia has a good article under
Inverse functions and differentiation
(f^-1)'(4) = 1/f'(1) = 1/(5+2) = 1/7
wikipedia has a good article under
Inverse functions and differentiation