Constrained optimization with fmincon

Hello, I'm trying to optimize a function with respect to a vector of unknowns (theta), under the following constraint sum of theta^2 + e = 1, where e is a constant. Could you help me? Thank you!

Answer 1

[Walter Roberson]

Use the nonlcon option; http://www.mathworks.com/help/optim/ug/fmincon.html

[Mic]

Thank you!