![Optimization with nonlinear constraints in SAS](https://blogs.sas.com/content/iml/files/2018/08/nonlinConstraints3-400x336.png)
This article shows how to perform an optimization in SAS when the parameters are restricted by nonlinear constraints. In particular, it solves an optimization problem where the parameters are constrained to lie in the annular region between two circles. The end of the article shows the path of partial solutions