Optimizing With User Specified Gradients

I am trying to use fmincon/fminunc but provide the analytical gradient. Example code tells me to use options like the following:

options = optimoptions('fmincon','SpecifyObjectiveGradient',true);

When I do so I receive the error: 'SpecifyObjectiveGradient' is not an option for FMINCON.

I use matlab 2015b.

I am looking for the simplest possible self contained example of specifying a gradient for use in optimization.

Answer 1

[Walter Roberson]

You are looking at the R2016a documentation. If you look at the R2015b documentation you will see GradObj and GradConstr rather than SpecifyObjectiveGradient and SpecifyConstraintGradient