# TSROSWRA34PW2
Four stage third order L-stable Rosenbrock-W scheme for PDAE of index 1. Only an approximate Jacobian is needed. By default, it is only recomputed once per step.

This is strongly A-stable with R(infty) = 0. The embedded method of order 2 is strongly A-stable with R(infty) = 0.48.




## References

- **** -*** Rang and Angermann, New Rosenbrock W methods of order 3 for partial differential algebraic equations of index 1, 2005.



## See Also
 [](chapter_ts), `TSROSW`

## Level
intermediate

## Location
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/ts/impls/rosw/rosw.c.html#TSROSWRA34PW2">src/ts/impls/rosw/rosw.c</A>


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