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Determine $M^{-1}$, the inverse of $M$.
Mathematics 0580 · IGCSE · Algebraic manipulation
Algebraic manipulation — practice question
The matrix can be written as $M = \begin{pmatrix}3 & 1 \\ -11 & -2\end{pmatrix}$.
Worked solution & mark scheme
This 2-mark question has a full step-by-step worked solution and mark scheme. One marking point: “A correct intermediate form is $k\begin{pmatrix}-2&-1\\11&3\end{pmatrix}$, or equivalently det $=5$” …
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