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Questions  >>  JEEMAIN and NEET  >>  Mathematics  >>  Class12  >>  Matrices
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Q)

If $\begin{bmatrix}0&a\\b&0\end{bmatrix}^4=I$ then

$(a)\;a=1=2b\qquad(b)\;a=b\qquad(c)\;a=b^2\qquad(d)\;ab=1$

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