1. Consider the function y = f (z) pictured below. (a) Identify the roots of the function. That is, identify where f (x) = 0. Answers should be formatted as a: = ???. (b) Identify the root of the derivative of the function. That is, identify where f' (x) = 0. Your answer should be in the format at = ???. (0) Identify where f' (as) does not exist. Your answer should be in the format as = ???. (d) Identify the intervals over which the function is positive. That is, identify where f (3;) > 0. Answers should be formatted as: ??? 0. Answers should be formatted as: ???