# Normal Derivative values at boundary

**URL:** https://community.freefem.org/t/normal-derivative-values-at-boundary/1249
**Category:** General Discussion
**Created:** [October 7, 2021, 7:31am UTC](https://community.freefem.org/t/normal-derivative-values-at-boundary/1249 "2021-10-07T07:31:57Z")
**Posts on this page:** 1
**Showing post:** 5

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### Author: ![cmd](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.freefem.org/cmd/32/67_2.png) [@cmd](https://community.freefem.org/u/cmd)
#### Post date: [September 21, 2023, 12:10pm UTC](https://community.freefem.org/t/normal-derivative-values-at-boundary/1249/5 "2023-09-21T12:10:29Z")

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See my solution in [this post](https://community.freefem.org/t/rate-of-change-in-temperature-at-everypoint-on-a-heated-circle/2708/7).

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