Raspberry Pi Forums

Hi,
Im using mathematica 9. I made some code:

CDeb[n_, t_, thD_] = n*9*8.31 (t/thD)^3 Integrate[ x^4 Exp[x]*(Exp[x] - 1)^-2, {x, 0, thD/t}];
CEl[t_, gamma_] = gamma*t;
Cp[n_, t_, thD_, gamma_] = CDeb[n, t, thD] + CEl[t, gamma];
n = 5;
fitt = FindFit[pun, Cp[n, T, ThetaD, GammA], {{ThetaD, 330}, {GammA, 0.1}}, T];

and in the line with the FindFit I got somthing like this:

FindFit::nrlnum: The function value {Undefined,Undefined,Undefined,Undefined,Undefined,Undefined,Undefined,Undefined,Undefined,Undefined,Undefined,Undefined,Undefined,Undefined,Undefined,Undefined,Undefined,Undefined,Undefined,Undefined,Undefined,Undefined,Undefined,Undefined,Undefined,Undefined,Undefined,Undefined,Undefined,Undefined,Undefined,Undefined,Undefined,Undefined,Undefined,Undefined,Undefined,Undefined,Undefined} is not a list of real numbers with dimensions {39} at {ThetaD,GammA} = {330.,0.1}. >>
FindFit::nrlnum: The function value {Undefined,Undefined,Undefined,Undefined,Undefined,Undefined,Undefined,Undefined,Undefined,Undefined,Undefined,Undefined,Undefined,Undefined,Undefined,Undefined,Undefined,Undefined,Undefined,Undefined,Undefined,Undefined,Undefined,Undefined,Undefined,Undefined,Undefined,Undefined,Undefined,Undefined,Undefined,Undefined,Undefined,Undefined,Undefined,Undefined,Undefined,Undefined,Undefined} is not a list of real numbers with dimensions {39} at {ThetaD,GammA} = {330.,0.1}. >>

I have no ide whats goin on with it. The line with FindFit works fine. In mathematica 7 everything is working perfect.
Any suggestions?

Raspberry Pi runs Mathematica 10.

I get a different error than you, though.
so I don't think you posted all the relevant code.

If you need support for Mathematica 9, you should go to a general Mathematica support forum.