MaplePrimes - answers and comments on Question, statistic nonlinearfit

I determined this function through the maple

ilehi — Sun, 05 Feb 2012 16:11:30 Z

I determined this function through the maple so there is no porbleme code,,,, just the problem is that the fits parameters are not correct , it is a simulation problem

A suggestion

epostma — Thu, 23 Feb 2012 23:32:16 Z

The parameters in your expression to be fitted, Amplitude, seem to be x, t, n, and S (after, as Axel pointed out, you substitute I for i). However, in the call to NonlinearFit, you give parameter ranges for a wholly different set of parameters - De, S, and tau. That doesn't work - you should either rewrite Amplitude to depend (only) on De, S, and tau, or supply ranges for (only) x, t, n, and S.

Hope this helps,

Erik Postma
Maplesoft.

How?

Jarekkk — Tue, 07 Feb 2012 00:17:46 Z

How did you determine the function? What should the function satisfy?