JEE Math Practice Question
Let M and m respectively be the maximum and the minimum values of $f(x)=\left|\begin{array}{ccc}1+\sin ^2 x & \cos ^2 x & 4 \sin 4 x \\ \sin ^2 x & 1+\cos ^2 x & 4 \sin 4 x \\ \sin ^2 x & \cos ^2 x & 1+4 \sin 4 x\end{array}\right|, x \in R$ Then $ M^4 - m^4 $ is equal to :
- A.1280
- B.1040
- C.1215
- D.1295
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