A
=
\mathbf{A} =
A
=
det
(
A
)
=
4.5
\text{det}(\mathbf{A}) = 4.5
det
(
A
)
=
4
.
5
v
1
\mathbf{v}_1
v
1
v
2
\mathbf{v}_2
v
2
v
3
\mathbf{v}_3
v
3