Problem

Problem

If the trace of matrix A=[x−2ex−sin⁡xcos⁡x2x2−x+3ln⁡∣x∣0tan⁡−1xx−7]A = \begin{bmatrix} x - 2 & e^x & -\sin x \\ \cos x^2 & x^2 - x + 3 & \ln|x| \\ 0 & \tan^{-1} x & x - 7 \end{bmatrix} is zero, then xx is equal to : (a) -2 or 3 (b) -3 or -2 (c) -3 or 2 (d) 2 or 3

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