AP Precalculus Quiz
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FUNCTIONS INVOLVING PARAMETERS, VECTORS, AND MATRICES
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A 2D graphics transform uses
A
=
[
3
1
2
1
]
A=\begin{bmatrix}3&1\\2&1\end{bmatrix}
A
=
[
3
2
1
1
]
. Since
A
−
1
A^{-1}
A
−
1
exists only if
det
(
A
)
≠
0
\det(A)\neq0
det
(
A
)
=
0
, what is
det
(
A
)
\det(A)
det
(
A
)
?
A
−
1
-1
−
1
B
1
1
1
C
5
5
5
D
0
0
0
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