Hi everyone,

I want use FindFit for Data witch i read from a file, but i can't do it, please help me to solve this problem.

i do this:

data = ReadList["base3.dat", {Number, Number}];

voltage = data[[All, 1]];

current = data[[All, 2]];

FindFit[data,a*x + b*y + c*x*y + e*x^2 + e*y^2, {a, b, c, e, d}, {x, y}];

FindFit::fitc: Number of coordinates (1) is not equal to the number of variables (2).

help me if you can please