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Question Number 24152 by Joel577 last updated on 13/Nov/17

$$\mathrm{Let}\mathrm{matrice}A=\left(\begin{array}{cc}a& b\\ c& d\end{array}\right),\mathrm{and}{A}^T=A^{-1}$$$$\mathrm{Find}d-bc$$

Commented by 1kanika# last updated on 26/Nov/17

$$1$$

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