Which of the following functions has a range of [−1,1][-1, 1][−1,1] and a period of 2π/32\pi/32π/3?
f(x)=sin(3x)f(x) = \sin(3x)f(x)=sin(3x)
f(x)=cos(x/3)f(x) = \cos(x/3)f(x)=cos(x/3)
f(x)=3sin(x)f(x) = 3\sin(x)f(x)=3sin(x)
f(x)=tan(3x)f(x) = \tan(3x)f(x)=tan(3x)