Please tell me if some of you know of a way, or program that I can download or use to fit a given polynomial to a set of data.(adsbygoogle = window.adsbygoogle || []).push({});

I have done an experiment in which I varied two currents thru wires (Ix, Iy) and measured the Temperature at a given point (T). The polynomial is known from a model (I still don't know it for sure), but lets say that it is:

T = a+ b(Ix) + c(Iy) + d(Ix)^4 + e(Iy)^4

I need to obtain the value of this polynomial, because the current where measured (Ix from 0 to 8, Iy from 0 to 8), and I need values in the range of Ix=8, Iy=10 (Extrapolate).

Most of the programs I used for data manipulation fit polynomial for 2D curves (only one variable), not surfaces.

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# How to fit a 2 variables polynomial (3D graph) to a set of data: Need to extrapolate

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