Let f: r r be defined by f(x) = min(xl, x*-1) then f is 1) then f is a) a discontinuous function. continuous and differentiable everywhere. b) c) d) differentia

Let f: R R be defined by f(X) = min(xl, x*-1) Then f is 1) Then f is A) a discontinuous function. continuous and differentiable everywhere. B) C) D) differentiable everywhere except at one point differentiable everywhere except at two points.