# SNES with Finite Difference Jacobian Approximations

**URL:** <https://community.freefem.org/t/snes-with-finite-difference-jacobian-approximations/3520>\
**Category:** General Discussion\
**Created:** [September 25, 2024, 12:26pm UTC](https://community.freefem.org/t/snes-with-finite-difference-jacobian-approximations/3520 "2024-09-25T12:26:29Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![stergopilot](https://avatars.discourse-cdn.com/v4/letter/s/e36b37/32.png) [@stergopilot](https://community.freefem.org/u/stergopilot)\
**Post date:** [September 25, 2024, 12:26pm UTC](https://community.freefem.org/t/snes-with-finite-difference-jacobian-approximations/3520/1 "2024-09-25T12:26:29Z")

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Dear all,  
I was wondering if we could use SNES to solve nonlinear PDEs with _Finite Difference Jacobian Approximations_. Are there any examples? It is not easy to compute Jacobian matrices analytically in my simulation.  
Thanks