Find the Zeros of the Function in the Interval $[-2 \pi, 2 \pi]$

question 8

Multiple Choice

Find the zeros of the function in the interval $[-2 \pi, 2 \pi]$ .
- $$f ( x ) = \frac { 1 } { 2 } \cos 2 x$$

• A) \(\pm \frac { \pi } { 2 } , \pm \frac { 3 \pi } { 2 }\)
• B) \(\pm \pi , \pm 3 \pi\)
• C) \(0 , \pm \frac { \pi } { 4 } , \pm \frac { 3 \pi } { 4 }\)
• D) \(\pm \frac { \pi } { 4 } , \pm \frac { 3 \pi } { 4 } , \pm \frac { 5 \pi } { 4 } , \pm \frac { 7 \pi } { 4 }\)