CAPE Pure Mathematics Unit 2 · May/June 2014 · Paper 2 · Question 5(b)(iii)
Matrices A and B are given by A = \begin{pmatrix} 1 & x & -1 \\ 3 & 0 & 2 \\ 2 & 1 & 0 \end{pmatrix} and B = \begin{pmatrix} 1 & 2 & 5 \\ 2 & 3 & 4 \\ 1 & 1 & 2 \end{pmatrix}.
Hence, obtain A^{-1}.
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