Let (a) (5 points) Find the local extrema of f. (b) (5 points) Find intervals where the graph of f is concave up and concave down, and nd the inection points. (0) (5 points) A line 3; 2 ms: + c, m 79 0, is an oblique asymptote of the graph of f (m) if 7 . f (3:) . 7 . m 21100 :1: and $931104 f (30) mm) c ex1sts. Find the vertical and oblique asymptotes of the graph of f