The function x) is dened by the following equation. (1) Find the critical values of 3'. Enter these as a list or write NONE if there are not any. Answer = (2) For which values of a: is the graph 3; 2 x) is concave up ? Answer: Use interval notation (3) For which values of :1: is the graph 3; : x) is concave down '? Answer: Use interval notation (4) For which values of a: does the graph y 2 x) have an inection point? Write your answer as a list and write NONE if there are not any. Answer =