Addition, subtraction and multiplication by a scalar for 2 x 2 matrices.
", "licence": "Creative Commons Attribution 4.0 International"}, "statement": "Find the answers to the following matrix calculations, filling in your answers in the spaces provided.
", "advice": "(a)
\n$\\var{a}+\\var{b}=\\var{u}$
\nJust add corresponding elements together.
\n(b)
\n$\\var{p}\\var{c}-\\var{q}\\var{d}$
\nMultiply each element of the first matrix by $\\var{p}$...
\n$\\var{p}\\var{c}=\\var{pc}$
\n...and multiply each element of the second matrix by $\\var{q}$.
$\\var{q}\\var{d}=\\var{qd}$
\nFinally, subtract corresponding elements
\n$\\var{p}\\var{c}-\\var{q}\\var{d}=\\var{pc}-\\var{qd}=\\var{v}$
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