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## Re: Solving Systems Of Linear Equations

 From: WJ Atsma Subject: Re: Solving Systems Of Linear Equations Date: Tue, 6 May 2003 14:15:17 +0200

I just added some functions to the octave-forge cvs. With the new symbolic tools
```you could do this:

symbols
W=sym("W");
X=sym("X");
Y=sym("Y");
Z=sym("Z");

f1=2*W+5*X-Y+4*Z;
f2=W+X+Y+Z;
f3=4*W-3*X+6*Y+Z;
f4=2*W-5*X-3*Y-Z;

## to solve a linear system, pass eqns and variables as cell arrays
## or lists:
a = symlsolve (list(f1,f2,f3,f4),list(W,X,Y,Z));

## check the result:
subs(f1,list(W,X,Y,Z),a)

... etc.

On 2003.05.06 01:50 Lauren Sorenson wrote:
```
```I have a linear equation to solve, but I'm not sure where to start
with
it.  Some help with it or even an example of another one that it is
similar to it would be helpful. Thank You!

Question:  Solve this System of Linear Equations

2W+5X-Y+4Z=0
W+X+Y+Z=0
4W-3X+6Y+Z=0
2W-5X-3Y-Z=7

```
```

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```