Mathematics 4024 · O Level · Equations

Equations — practice question

$A=\begin{pmatrix}4&-1\\2&0\end{pmatrix}$ and $B=\begin{pmatrix}6&-3\\0&-2\end{pmatrix}$.

(a)[2]

Find the matrix $X$, such that $2A+X=B$.

(b)[3]

Find the matrix $Y$, such that $AY=\begin{pmatrix}1&0\\0&1\end{pmatrix}$.

Worked solution & mark scheme

This 5-mark question has a full step-by-step worked solution and mark scheme. One marking point: “$\begin{pmatrix}-2&-1\\-4&-2\end{pmatrix}$” …