45. If f(x) x >0 then f(x) is %3D 0, a. differentiable at x = 0 b. continuous but not differentiable at x = 0 c. discontinuous at x = 0 d. none of these x-1, x < 0 46. If f(x) = then x 2x, x20 a. f(xl) is discontinuous at x = 0 b. f(\xf) is differentiable at x = 0 c. f(x)| is non-differentiable at x = 0, 2 d. Ax)| is continuous at x = 0 %3D |1-4x |, 0sx