MCQ
Which of the following function has period 2?
- A$\cos \left[\left(\frac{\pi}{2}\right) x\right]$
- Bcos (2π x)
- ✓cos (π x)
- D$\cos \left[\left(\frac{\pi}{3}\right) x\right]$
✓
Answer
Correct option: C.
cos (π x)
C
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