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Re: variable range

From: Jerome BENOIT <jgmbenoit at wanadoo dot fr>
To: gsl-discuss at sources dot redhat dot com
Cc: Sang-Joon Lee <sangjoon at mail dot rice dot edu>
Date: Tue, 29 Jul 2003 11:53:11 +0300
Subject: Re: variable range
Organization: UOC
References: <Pine.GSO.4.33.0307281043160.22911-100000@kennel.ruf.rice.edu>
Reply-to: jgmbenoit at wanadoo dot fr

Hello,

a good idea is to make a change of variable in such a way that
the new variable are unconstrained.


I hope that helps,
Jerome

Sang-Joon Lee wrote:

Hi,

In using the GSL "Multidimensional Minimization" algorithms, I would like
to limit the range of variables.  For instance, in a function,
f(x)=3*(x-4)*(x-4)+2, I would like to make x be a positive real number.
I would appreciate if you let me know how to do this.

Sincerely yours,

Sang-Joon Lee

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