Consider the equation below. f(x) = 9 sin x + 9 cos x (a) Find the intervals on which fis increasing. (Enter the interval that contains smaller numbers first.) Find the interval on which fis decreasing (b) Find the local minimum and maximum values of f. (Round your answers to two decimal place max (min) (c) Find the inflection points ) (smaller x value) (larger x value) Find the interval on which f is concave up. Find the intervals on which fis concave down. (Enter the interval that contains smaller numbers first.) Need Help?RaMaster Master lt Talk to a Tutor