home *** CD-ROM | disk | FTP | other *** search
- Path: sparky!uunet!cis.ohio-state.edu!zaphod.mps.ohio-state.edu!darwin.sura.net!spool.mu.edu!news.nd.edu!irishvma!rvesterm
- Date: Monday, 9 Nov 1992 16:58:08 EST
- From: <RVESTERM@vma.cc.nd.edu>
- Message-ID: <92314.165808RVESTERM@vma.cc.nd.edu>
- Newsgroups: sci.math
- Subject: Re: 4x4 matrix
- References: <2054@tfd.tfd.com>
- Lines: 16
-
- forget about the "formula" to invert a 4x4 matrix, as opposed to the
- "formula" to invert a 3x3 matrix, or whatever. a much easier way to
- invert a square matrix of any size (say nxn) is the following:
-
- 1) using elementary row operations, reduce the matrix in question
- to the nxn identity matrix.
-
- 2) use the same elementary row operations, in the same order, on
- the nxn identity matrix.
-
- the resulting matrix will be the inverse of the matrix you started
- with.
-
- bob vesterman.
-
-
-