From help-request at octave dot org Sun Feb  6 18:12:56 2005
Subject: Re: two quadratic eq, please help
From: "Dmitri A. Sergatskov" <dmitri at unm dot edu>
To: Geordie McBain <geordie dot mcbain at aeromech dot usyd dot edu dot au>
CC: help at octave dot org
Date: Sun, 06 Feb 2005 17:15:18 -0700

Geordie McBain wrote:

> 
> Create a function to return the residual:
> 
>   function z = f (x)
>     z = [(12-x(1))^2+x(2)^2-15^2, (16+x(2))^2+x(1)^2-25^2];
>   endfunction
> 
> and fsolve it:
> 
> octave> fsolve ("f", [0, 0])
> ans =
> 
>    1.8887e-15
>    9.0000e+00
> 

and:

octave:5> fsolve ("f", [24, -9])
ans =

    24
    -9

:)

and so forth :)


> Geordie McBain
> www.aeromech.usyd.edu.au/~mcbain
> 
> 

Regards,

Dmitri.
-- 



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