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You are right, I miss your point. Still.

Okay, let me try explaining it a different way. It is my hypothesis that a system behaves in a way that closely follows the formula

f(x) = a(x^b)l + c(y^d)m + e(z^f)n + k

where a-f are constants and k-n, x-z variables. I have done 1000's of experiments where I have varied the values of k-n and x-z. In each experiment, I have obtained a result "j". I am attempting to find what values should be used for the constants a-f. How can I determine the best value of each constant (a-f) such that f(x) will be as close as possible to the experimental values, j?

Also, I will be using a stand-alone program to do the computations; a built in excel function, therefore, won't work.

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