If \( f(x)=\left|\begin{array}{ccc}\sin 2 x(1+2 \cos x) & \sin 2 x ... VIDEO
If \( f(x)=\left|\begin{array}{ccc}\sin 2 x(1+2 \cos x) & \sin 2 x & \sin 3 x \\ 3+4 \sin x & 3 & 4 \sin x \\ 1+\sin x & \sin x & 1\end{array}\right| \)https://bit.ly/YTAI_PWAP https://www.pw.live
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