Sketch the graph of a single function f (a ) that satisfies all of the following conditions: a. The domain of f is (-oo, 2) U (2, 0) b. f is discontinuous at x = 0 and 2, and continuous everywhere else c. f is continuous, but not differentiable at x = 4 d. f has a horizontal tangent line at x = -1 e. f' (a)