Article View: comp.theory
Article #2107Re: matrices
From: Robert D. Silverman
Date: Tue, 27 Feb 1990 15:34
Date: Tue, 27 Feb 1990 15:34
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1490 bytes
In article <4411@helios.TAMU.EDU> clc8347@tamunix.tamu.edu (Cheryl Cato) writes:
:I realize this is a very elementary problem, which probably
:has been answered many times here -- but I'm new to the news
:groups and am in desparate need of some help....
:
:I need to find the determinants of a 4 x 4 (or less)
:matrix - program to be written in C. The Gaussian
:Elimination, I've been told, is very unreliable and
:very hard to code. My ultimate goal is to solve for
:loop currents in an RLC circuit.
You have been grossly misinformed. Gaussian elimination is both simple
and easy to code - it takes less than a page of C code. It is numerically
reliable when done with partial pivoting.
See the following:
"Numerical Recipes", by Press, Flannery, Teukolsky, & Vettering
or
"Matrix Computations" by Golub and Van Loan.
--
Bob Silverman
#include <std.disclaimer>
Internet: bs@linus.mitre.org; UUCP: {decvax,philabs}!linus!bs
Mitre Corporation, Bedford, MA 01730
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!rutgers!cs.utexas.edu!usc!zaphod.mps.ohio-state.edu!think!linus!bs From: bs@linus.UUCP (Robert D. Silverman) Newsgroups: comp.theory Subject: Re: matrices Keywords: determinants Message-ID: <99150@linus.UUCP> Date: 27 Feb 90 15:34:31 GMT References: <1990Feb26.183024.23868@sj.ate.slb.com> <4411@helios.TAMU.EDU> Reply-To: bs@gauss.UUCP (Robert D. Silverman) Distribution: usa Organization: The MITRE Corporation, Bedford MA Lines: 28