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Mathematics
Mathematics
Problem
State the inverse of the matrix
A
=
(
a
b
c
d
)
A=\begin{pmatrix} a & b \\ c & d \end{pmatrix}
A
=
(
a
c
b
d
)
when
a
d
−
b
c
≠
0
ad-bc\neq0
a
d
−
b
c
=
0
.
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