Matrices

What the problems look like

A few statements from this skill. Answers, hints and worked solutions live in the practice session.

1. Warm-up

   Given $A = \begin{pmatrix} -2 & 9 \\ 8 & -5 \end{pmatrix}$ and $B = \begin{pmatrix} 2 & 6 \\ 9 & -7 \end{pmatrix}$, find the matrix $A - B$.

2. Warm-up

   Given $A = \begin{pmatrix} -9 & 6 \\ -1 & 8 \end{pmatrix}$ and $B = \begin{pmatrix} -2 & -3 \\ 6 & 8 \end{pmatrix}$, find the matrix $A - B$.

3. Warm-up

   Given $A = \begin{pmatrix} 8 & 6 \\ 3 & -5 \end{pmatrix}$ and $B = \begin{pmatrix} -2 & -5 \\ 7 & 3 \end{pmatrix}$, find the matrix $A - B$.

Problems shown under their original terms: Generated (template, solver-computed).