Plot a graph of the function and identify the locations of all critical points and inflection points. Check your work with a graphing utility.

Enter the following information from your graph (for multiple answers enter each separated by commas {e.g (a) 0,2 or (c) (-2,3),(0,-4)} if no value enter "none".

(a) Critical Points

(b) Inflection Points

You can earn partial credit on this problem.