Hi, I am trying to find good empirical estimates for some fixed parameters of a quadratic production function.
My equation is Y = a1L+a2I+a3W+a4F+a5T-a11L^2-a22I^2-a33W^2-a44F^2-a55T^2
where L is labor, I equipment, W water, F fertiliser, T temperature.
I am trying to find estimates for a1, a2,a3 a4, etc...any idea?