Find the intervals on which f is increasing and decreasing. f(x)=4sin^2x [-pi, pi]
if necessary, fill in the answer box(es) within your choice.
A. The function is increasing on and decreasing on (Simplify your answers Type your answers in interval notation Type exact answers, using pi as needed. Use a comma to separate answer as needed.)
B. The function is decreasing on The function is never increasing (Simplify your answer Type your answer in interval notation Type exact answers, using pi as needed. Use a comma to separate answers as needed)
C. The function is increasing on The function is never decreasing. (Simplify your answer Type your answer in interval notion. Type exact answers, using pi as needed. Use a comma to separate answers as needed.)
D. The function is never increasing nor decreasing.