Consider the equation below. (If an answer does not exist, enter DNE.) x] = 7 sin(X) + 7 cos[x}, O S x S 291 (a) Find the interval on which .I'is increasing. (Enter your answer using interval notation.) (males J Find the interval on which fis decreasing. (Enter your answer using interval notation.) :, in] Find the local minimum and maximum values of .F, ocal minimum value 7v' 2 V ocal maximum value TV 2 W c} Find the infection points. 31': x, y) = ( 7:0 ) (smallerxvalue} V T x, y) = ( 7:0 ) (largerxvalue} V Find the interval on which fis concave up. (Enter your answer using interval notation.) 5E Ln 4 ' 4 X Find the interval on which fis concave down. (Enter your answer using interval notation.)