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On Thu, 1 Apr 1999 17:10:25 +1000, Lance Birch <lan### [at] usa net> wrote:
>Hmm, wait a second, you can't "invert" a matrix can you?
The inverse of a (square) matrix A is the matrix A' that satisfies
the property A x A' = I, where I is the identity matrix and x stands
for the matrix multiplication operator[1]. A' may or may not exist for
a given matrix A, but if it does it is unique.
[1] I wish more people understood \TeX notation... $A\times A^{-1}=I$.
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