Given that f(z) = 2x+cos(x) is one-to-one, use the formula

Last updated: 7/20/2022

Given that f(z) = 2x+cos(x) is one-to-one, use the formula (f ¹)'(x) = 1/ f'(f ¹(x)) to find (f ¹)'(1). (ƒ˜¹)'(¹) =