2 f() = - 2 +3 a) Find the first and second derivatives. f'(x) = f" (x) =] b) Identify the graph that displays / in blue and f" in red. |? v B. C. c) Using the graphs of f and f", indicate where f is concave up and concave down. Give your answer in the form of an interval. NOTE: When using interval notation in WeBWork, remember that: You use 'INF' for oo and '-INF' for -Do. And use 'U' for the union symbol. Enter DNE if an answer does not exist. f is concave up on] f is concave down on