Inverse and Determinant of a Matrix
AP Precalculus · Flashcards
AP PRECALCULUS · FLASHCARDS
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QUESTION
What is the determinant of
[
0
1
1
0
]
\begin{bmatrix} 0 & 1 \\ 1 & 0 \end{bmatrix}
[
0
1
1
0
]
?
QUESTION
What is the determinant of
[
a
b
b
a
]
\begin{bmatrix} a & b \\ b & a \end{bmatrix}
[
a
b
b
a
]
?
QUESTION
What is the determinant of
[
5
1
2
3
]
\begin{bmatrix} 5 & 1 \\ 2 & 3 \end{bmatrix}
[
5
2
1
3
]
?
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ANSWER
13.
(
5
)
(
3
)
−
(
1
)
(
2
)
=
15
−
2
=
13
(5)(3) - (1)(2) = 15 - 2 = 13
(
5
)
(
3
)
−
(
1
)
(
2
)
=
15
−
2
=
13
.
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