49. let f: r r be a differentiable function such that f(x) = 1 ne z, then (a) f is uniformly continuous on r (b) range of f is closed in r (c) range of f is ope

49. Let f: R R be a differentiable function such that f(x) = 1 ne Z, Then (A) f is uniformly continuous on R (B) Range of f is closed in R (C) Range of f is open in R (D) None of these