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Matrix (Page: 8)
Question No: # 75
If $ A=\begin{bmatrix} 2 & 1 \\ 3 & 4 \end{bmatrix} $ and $ B=\begin{bmatrix} 1 & -2 \\ -1 & 1 \end{bmatrix} $ then find the value of `(AB)^{-1}`
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