Mht CetFunctionsMHT CET 2019 3rd May Morning ShiftMCQ+2 / -02019Which of the following function has period 2?A $\cos \left[\left(\frac{\pi}{3}\right) x\right]$B $\cos \left[\left(\frac{\pi}{2}\right) x\right]$C $\cos (2 \pi x)$D $\cos (\pi x)$Check AnswerClear SelectionReveal AnswerShow Explanation