I am having trouble understanding this question.
The function f and g are defined on the set of real numbers as follows:
f(x)= abs(2sinx) g(x)= sin abs(2x)
a) i- Sketch the graphs of y=f(x) and y=g(x) in the interval -270 degrees =< x =< 270 degrees
b) Decide whether or not each function is periodic and if so state its period.
Thank you in advance.