Hello,

I am using the classical logistic growth equation to describe growth in a neonatal animal, the nonlinear equation is:

size=A/(1+exp(-k*(age-T)))

I have fitted this function to my data and now wish to use the relationship between age and size to estimate age based on size for animals with unknown ages. My question is, how does the above equation get rearranged to solve for age?

Your input is greatly appreciated.

A.