4. {20 pts} Consider the function u?) - 5-95 s [2.11 4 3. (3) Where is fir] increasing? __(b) Where is r] decreasing? (.2) Where is it concave up? ._(d} Where is it concave down? (2) Locate the points at which the function has any relative maxima/minima and find the values of the function at these points. Find an}.r inflection points