1.If f(x)=∣2cos4x2sin4x3+sin22x3+2cos4x2sin4xsin22x2cos4x3+2sin4xsin22x∣f(x)=\begin{vmatrix} 2\cos^{4}x & 2\sin^{4}x & 3+\sin^{2}2x \\ 3+2\cos^{4}x & 2\sin^{4}x & \sin^{2}2x \\ 2\cos^{4}x & 3+2\sin^{4}x & \sin^{2}2x \end{vmatrix}f(x)=2cos4x3+2cos4x2cos4x2sin4x2sin4x3+2sin4x3+sin22xsin22xsin22x, then 15f′(0)\frac{1}{5}f'(0)51f′(0) is equal to:a.000b.111c.222d.666Login to continueOnly logged in users canattempt or see the solution.
