3. (20 pts) Let if - 2 3. (20 pts) Let 3 if 2 < x < 1 3x+2 if 1 < x < O
3. (20 pts) Let if - 2
3. (20 pts) Let 3 if 2 < x < 1 3x+2 if 1 < x < O 1 (a) Sketch the graph of f on thc interval [2, 2] (b) Find all values of :r in [2, 2] at which f is not continuous. Explain why? (c) Is f differentiable at x = O? Explain why? Is f differentiable at x 1? Explain why?
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