Optimization Solver Iterative Display

You obtain details of the steps solvers take by setting the Display option to 'iter' with optimset. The displayed output contains headings and items from the following list.

Heading	Information Displayed	Solvers
Iteration	Iteration number, meaning the number of steps the algorithm has taken	fminsearch
Func-count	Cumulative number of function evaluations	fminbnd, fminsearch, fzero
x	Current point	fminbnd, fzero
f(x)	Current objective function value	fminbnd, fzero
min f(x)	Smallest objective function value found	fminsearch
Procedure	Algorithm used during the iteration
	initial golden (golden section search) parabolic (parabolic interpolation)	fminbnd
	initial simplex expand reflect shrink contract inside contract outside For details, see fminsearch Algorithm.	fminsearch
	initial (initial point) search (search for an interval containing a zero) bisection interpolation (linear interpolation or inverse quadratic interpolation)	fzero
a, f(a), b, f(b)	Search points and their function values while looking for an interval with function values of opposite signs	fzero