Least squares regression for nonlinear system of equations
Hello - I have a moderately complex model for a physical process (ion adsorption for anyone who knows what that means). I have two starting variables, x1 and x2, and two measured outcomes, y1 and y2 that change with x1 and x2, and unmeasurable, or hard to measure, variables, g1,...,gn that don't change. One or both of x1 and x2 can also change for each row in a series. I have a set of nonlinear eq...