Hi,
I have monthly data on X and Y since 2005 till now.
I would like to solve for the coefficient (b and a) of regressing y on x using the equation below. I came across a function called PROC NLMIXED in SAS but I am not quite sure that is a right function for me to use to solve for b and a in the following equation. Thanks a lot for your help!
X in the case is bounded between 0 and c