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Question 1 · 3 marks
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Find
A
B
\mathbf{A}\mathbf{B}
AB
,
where
A
=
(
3
−
1
2
4
)
\mathbf{A} = \begin{pmatrix} 3 & -1 \\ 2 & 4 \end{pmatrix}
A
=
(
3
2
−
1
4
)
and
B
=
(
1
5
−
2
0
)
\mathbf{B} = \begin{pmatrix} 1 & 5 \\ -2 & 0 \end{pmatrix}
B
=
(
1
−
2
5
0
)
.