MCQ
$f\left( x \right) = \left| {\begin{array}{*{20}{c}}
{2{{\cos }^2}2x}&{\sin 2x}&{ - \sin x} \\
{\sin 2x}&{2{{\sin }^2}x}&{\cos x} \\
{\sin x}&{ - \cos x}&0
\end{array}} \right|$,the value of $\int\limits_0^{\frac{\pi }{2}} {f'\left( x \right)} \,dx$ is equal to
{2{{\cos }^2}2x}&{\sin 2x}&{ - \sin x} \\
{\sin 2x}&{2{{\sin }^2}x}&{\cos x} \\
{\sin x}&{ - \cos x}&0
\end{array}} \right|$,the value of $\int\limits_0^{\frac{\pi }{2}} {f'\left( x \right)} \,dx$ is equal to
- A$-2$
- B$-1$
- C$2$
- ✓$0$