Sketch the graph of f and determine where f is nondifferentiable. -5x if X

Sketch the graph of f and determine where f is nondifferentiable. 5x -5 if x < 1 if x > 1 Where is the function f(x) nondifferentiable? Select the correct choice below and, if necessary, fill in the answer box to complete your choice. @ A. The function f(x) is differentiable for ali veal numbers. O B The function f(x) is nondifferentiable at