1 if a function f is differentiable at a point x = c and is one-one on some neighbourhood of c, then (a) its inverse is also differentiable at f(c) (b) its inve

1 If a function f is differentiable at a point x = C and is one-one on some neighbourhood of c, then (A) its inverse is also differentiable at f(c) (B) its inverse is not differentiable 1 (C) g'Tf(c) f(c) (D) None