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# TAONM
Nelder-Mead solver for derivative free, unconstrained minimization 
## Options Database Keys

- ***-tao_nm_lambda -*** initial step length
- ***-tao_nm_mu -*** expansion/contraction factor




## Level
beginner

## Location
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/tao/unconstrained/impls/neldermead/neldermead.c.html#TAONM">src/tao/unconstrained/impls/neldermead/neldermead.c</A>

## Examples
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/tao/tutorials/ex4.c.html">src/tao/tutorials/ex4.c</A><BR>


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[Edit on GitLab](https://gitlab.com/petsc/petsc/-/edit/release/src/tao/unconstrained/impls/neldermead/neldermead.c)


[Index of all Tao routines](index.md)  
[Table of Contents for all manual pages](/manualpages/index.md)  
[Index of all manual pages](/manualpages/singleindex.md)