fminsearch_(funfcn,​x0,options,varargin​)

Version 1.1.0.0 (2.8 KB) by Kenneth Johnson
Works around a bug (or design defect) in fminsearch.
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Updated 23 May 2016

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The standard fminsearch function uses an unreliable and faulty method for setting the initial x step, e.g. as illustrated by the case fminsearch(@(x) (x-1)^2,1e-3). (The return value is close to zero.) fminsearch_ provides user control of the x step, and uses a more reliable default, e.g. fminsearch_(@(x) (x-1)^2,1e-3) returns 1.

Cite As

Kenneth Johnson (2025). fminsearch_(funfcn,x0,options,varargin) (https://www.mathworks.com/matlabcentral/fileexchange/57284-fminsearch_-funfcn-x0-options-varargin), MATLAB Central File Exchange. Retrieved .

MATLAB Release Compatibility
Created with R2016a
Compatible with any release
Platform Compatibility
Windows macOS Linux
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Version Published Release Notes
1.1.0.0

Version 1.1: Added varargin{:} to fminsearch arguments.
1.0.0.0