Question: 1. If a function is not differentiable, then it is not continuous.
2. Which of the following would be a counterexample to the statement: "If f is differentiable at x = a then f is continuous at x = a"?
(a) A function which is not differentiable at x = a but is continuous at x = a.
(b) A function which is not continuous at x = a but is differentiable at x = a.
(c) A function which is both continuous and differentiable at x = a.
(d) A function which is neither continuous nor differentiable at x = a.