# DMTSGetRHSJacobian
get TS Jacobian evaluation function 
## Synopsis
```
#include "petscts.h" 
PetscErrorCode DMTSGetRHSJacobian(DM dm, TSRHSJacobian *func, void **ctx)
```
Not Collective


## Input Parameter

- ***dm -*** DM to be used with TS



## Output Parameters

- ***func -*** Jacobian evaluation function, see TSSetRHSJacobian() for calling sequence
- ***ctx -*** context for residual evaluation





## Note
TSGetJacobian() is normally used, but it calls this function internally because the user context is actually
associated with the DM.  This makes the interface consistent regardless of whether the user interacts with a DM or
not. If DM took a more central role at some later date, this could become the primary method of setting the Jacobian.


## See Also
 `DMTSSetContext()`, `TSSetRHSFunction()`, `DMTSSetRHSJacobian()`, `TSSetRHSJacobian()`

## Level
advanced

## Location
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/ts/utils/dmts.c.html#DMTSGetRHSJacobian">src/ts/utils/dmts.c</A>


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[Edit on GitLab](https://gitlab.com/petsc/petsc/-/edit/release/src/ts/utils/dmts.c)


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