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Re: best fitting

• To: mathgroup at smc.vnet.net
• Subject: [mg86692] Re: best fitting
• From: dh <dh at metrohm.ch>
• Date: Wed, 19 Mar 2008 05:20:41 -0500 (EST)
• References: <fro394$i7k$1@smc.vnet.net>

Hi,

look at:

P = { (W - K^2/3) / t + A [(W - K^2/3) / t]^3} E1 (t^4) / (25^2)

K = P / (alfa D^0.5)

this is a recursive definition. Is this what you want????

hope this helps, Daniel



umby wrote:

> Hi,

> 

> 

> 

> I have some experimental data in the form of quadruplets {P, W, t, D}.

> 

> How can I find the best fit parameters: alfa, A and E1 of the function:

> 

> 

> 

> P = { (W - K^2/3) / t + A [(W - K^2/3) / t]^3} E1 (t^4) / (25^2)

> 

> 

> 

> where K = P / (alfa D^0.5).

> 

> 

> 

> Thank you

> 

> -u

> 

> 

>