CGGC Q10
0. Choose the functions that are periodic.
- Option : C
- Explanation : For f(x) = x - [x]; where [x] stands for the greatest integer ≤ x, solving the equation f(x + T) = f(x), we get T = 1 as the period. f(x) = |cos(x)| is periodic with period π n.f(x) = (x)cos(x) and f(x) = sin(1/x) if x ≠ 0; 0 otherwise are not periodic.
