Consider the equation below. f(x) = 3 sin(x) + 3 cos(x), 0 s x s 22: (a) Find the interval on which fis increasing. (Enter your answer using interval notation.) (0,27t) Find the interval on which fis decreasing. (Enter your answer using interval notation.) 51: 4'4 (b) Find the local minimum and maximum values of f. . _ 711: local minimum value '4 . 311: local maXImum value 4 (c) Find the inflection points. (x, y) = (|:| ) (smaller x-value) ( |:| ) (larger xvalue) Find the interval on which fis concave up. (Enter your answer using interval notation.) Find the interval on which fis concave down. (Enter your answer using interval notation.) S A __>