Consider the function below. (Round the answers to two decimal places. If you need to use - or co, enter -INFINITY or INFINITY.) f(0) 2 cos(0) + (cos (8))2 (a) Find the interval of increase. Find the interval of decrease. ( (b) Find the local minimum value. (c) Find the inflection points. ( ) (smaller x value) ) (larger x value) Find the interval where the function is concave up. Find the intervals where the function is concave down. (Enter the interval that contains smaller numbers first.) ]) U ([