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Non-linear ecuation...

From: John W. Eaton
Subject: Non-linear ecuation...
Date: Wed, 22 Mar 2000 16:03:52 -0600 (CST)

On 22-Mar-2000, Cederik <address@hidden> wrote:

| I have the next set of nine non-linear ecuations:
| ln(a)-ln(f)+i+4g+(19720/8314)=0
| ln(b)-ln(f)+2g+h-(192420/8314)=0
| ln(c)-ln(f)+h+i-(200240/8314)=0
| ln(d)-ln(f)+2h+i-(395790/8314)=0
| ln(e)-ln(f)+2g=0
| a+c+d-2=0
| 4a+2b+2e-14=0
| b+c+2d-3=0
| a+b+c+d+e-f=0
| Where:
| x[1]=a
| x[2]=b
| x[3]=c
| x[4]=d
| x[5]=e
| x[6]=f
| x[7]=g
| x[8]=h
| x[9]=i
| Octave can't solve it... (non-convergent), but in fact i know that set of
| ecuations has solution. Because is a Book example. 
| Octave can solve it if i put the initial x's [a,b,c,d,e,f,g,h,i] as the
| exactly solutions. But that way isn't usefull for me... 
| Any sugestions?

Can you please provide enough information so that someone can at least
try to reproduce your problem?  What is the expected solution?  What
initial value of x fails?


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