I need to fit a function to my data. I tried it with multiple regression, but it didn't work.
Since the result needs to be 0, if one of the variables is 0, my idea is to do a multiplication of them and find the ideal exponents.
So it would look like this: y = x1^a * x2^b * x3^c * x4^d
Is there any way to find the ideal a, b, c and d if i have the xi and y?
Thanks in advance