# References for trust region dogleg method

Can you provide good references to the trust region dogleg method? This optimization method is used in Matlab's fsolve to solve nonlinear simultaneous equations and I want to understand it better.

I have noticed the list of references at the bottom of the Matlab help page but I'm lookng for something that gives a gentler introduction: more intuitive, not too mathematical and preferably with diagrams. I have a background in quantum physics, but am not so strong on numerical math.

• Multi-variate nonlinear optimization by its nature is going to tend to be mathematical. Did you follow the link in the Algorithms section of the documentation to read more about the Trust-Region Dogleg Method? Also, this link was helpful for me and there are numerous other class notes and presentation available via Google – horchler Jan 5 '17 at 23:06