(a) If f(x) = x²=1, find f'(x) and ƒ"(x). x² + 1 f'(x) = f"(x) = (b) Check to see that your answers to part (a) are reasonable by comparing the graphs of f, f', and f". f' = 0 when f has a ---Select--- f" = 0 when f' has a ---Select--- f' is negative when fis---Select--- and positive when fis --Select--- f" is negative when f' is ---Select-- and positive when f' is ---Select--

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