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| Thanks Jason, for pointing it out, though I was not expecting it. Will think over it, there is something wrong in my calculations. |
| Dear Eric, Thanks for the response. I tried it this way but the two drawings are consistent with each other. Consider a line between points spherical points (30, 0, 0) and (30, 0, Pi). If we convert it to cartesian system, it is a line between (0,... |
| Hi Marco, What you are saying, makes sense. This data should ideally head to infinite at T = 0, though experimental data points (specially close to T = 0) might be low in accuracy and hence the discrepancy. Anyways thanks for your help and figuring... |
| Hi Frank, Thanks for your help, your suggestion worked fine. Now I am having another issue, in this data fitting I am getting the unexpected values of of parameters a & b and now want to fix the domain of variables. How can I do it in FindFit... |
| thanks a lot !! |
| The standered form of Ei function is, Ei(z) = -Integrate[Exp[-t]/t, {t, -z, infinite]. But for the function I am trying to integrate, this needs to be modified.. |