In Exercises consider the function on the interval (0, 2). For each function (a) Find the open interval(s) on which the function is increasing

In Exercises π consider the function on the interval (0, 2π). For each function

(a) Find the open interval(s) on which the function is increasing or decreasing 

(b) Apply the First Derivative Test to identify all relative extrema

(c) Use a graphing utility to confirm your results

f(x) = sin x + sin x