CAPE Pure Mathematics Unit 2 · May/June 2019 · Paper 1 · Question Q45
Item 45 refers to the matrix \mathbf{M} below.
\mathbf{M} = \begin{pmatrix} 1 & 2 & 4 \\ -1 & 3 & 0 \\ 0 & 1 & 5 \end{pmatrix}
\nThe co-factor of the element 3 in \mathbf{M} may be written as
- (A)
-\begin{vmatrix} 2 & -1 \\ 0 & 1 \end{vmatrix} - (B)
-\begin{vmatrix} 1 & 4 \\ 0 & 5 \end{vmatrix} - (C)
\begin{vmatrix} 1 & 4 \\ 0 & 5 \end{vmatrix} - (D)
\begin{vmatrix} 2 & -1 \\ 0 & 1 \end{vmatrix}
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