Why isn't my max iterations increasing?

I'm trying to increase the max iterations for fsolve but it seems that it's not changing even when I specify a different number.

Answer 1

[Star Strider]

Always tell the functions that there is an options structure available —

answer1 = fsolve(fun, x0, options)

They do not infer it from its presence in your workspace.

Answer 2

[Image Analyst]

Evidently it has a max iteration of 400, not ten thousand like you tried to use. I don't know why.

Answer 3

[Steven Lord]

You're not passing the options you set using optimoptions into fsolve. The optimoptions function doesn't change some "global options"; you have to pass that output argument into the function you want to use the new options.