The function $f ( x ) = | \sin 4 x | + | \cos 2 x |$, is a periodic function with a fundamental period (1) $\pi$ (2) $2 \pi$ (3) $\frac { \pi } { 4 }$ (4) $\frac { \pi } { 2 }$
The function $f ( x ) = | \sin 4 x | + | \cos 2 x |$, is a periodic function with a fundamental period\\
(1) $\pi$\\
(2) $2 \pi$\\
(3) $\frac { \pi } { 4 }$\\
(4) $\frac { \pi } { 2 }$