NonLinearRegress Problem
- To: mathgroup at smc.vnet.net
- Subject: [mg68346] NonLinearRegress Problem
- From: "jour" <jour at ccr.jussieu.fr>
- Date: Wed, 2 Aug 2006 05:23:59 -0400 (EDT)
- Sender: owner-wri-mathgroup at wolfram.com
I have the following problem with NonLinearRegress
I have defined the following function
deb[teta_,n_,t]:= 9 n (t/teta)^3 Nintegrate[(x^4
Exp[x])/(1+Exp[x])^2,{x,0,t/teta}]
I can Table this function without problem
Table[{t, deb2[100, 3, t]}, {t, 1, 200, 5}]
but when I try to use this function in NonlinearRegress
fut = NonlinearRegress[dat,
deb2[teta, n, t],
{t}, {{teta, {10., 50.}, 0., 1000.}, {n, {1, 3}, 1, 70}}]
I get an error message
NIntegrate::"nlim" t/teta is not a valid limit of integration
any suggestions ?