Linear system and matrices: For the system of linear equations, the matrix representation is,where
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Important results:
If
A
is an invertible matrix
,
then its inverse is
unique
.
The inverse of
A
is denoted by
.
[proof:]
Suppose
B
and
C
are inverses of
A
. Then,
.
.
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linalgebra -> Coefficient matrix and augmented matrix: The coefficient matrix derived from a system of linear equations
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