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Questions  >>  CBSE XII  >>  Math  >>  Determinants
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If $x,y, z\in R,$ then the value of determinant $\small\begin{vmatrix}(2^x + 2^{-x})^2 & (2^x - 2^{-x})^2 & 1\\ (3^x + 3^{-x})^2 & (3^x - 3^{-x})^2 & 1\\(4^x + 4^{-x})^2 & (4^x - 4^{-x})^2 & 1\end{vmatrix}$ is

$\begin{array}{1 1} 1 \\ -1 \\ 0 \\ \pm 1 \end{array}$

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