[Date Index] [Thread Index] [Author Index]

Re: Nonlinear Least Squares lsqnonlin

• To: mathgroup at smc.vnet.net
• Subject: [mg110239] Re: Nonlinear Least Squares lsqnonlin
• From: "Sjoerd C. de Vries" <sjoerd.c.devries at gmail.com>
• Date: Thu, 10 Jun 2010 08:06:48 -0400 (EDT)
• References: <huntg8$bp6$1@smc.vnet.net>

Perhaps FindMinimum, Minimize, or NMinimize can be used to do this.
But before you start doing it the hard way, are you sure that a
function like NSolve can't solve your equations?

Cheers -- Sjoerd

On Jun 9, 1:21 pm, Juan Jose Cardenas <juanj... at yandex.ru> wrote:
> I'm trying to solve a system of non-linear equations that involves
> logarithms of several variables. I have developed code in another system to do
> so using the function lsqnonlin.  Is there an equivalent function in
> Mathematica 7?
>
> I need to input the function matrix, the initial approximation vector,
> and the precision and get a vector with the solution values of the
> variables.
>
> I don't seem to find anything by searching on the web.
>
> Thank you