# Total Derivative error

**URL:** <https://community.wolfram.com/t/total-derivative-error/18845>\
**Category:** Questions\
**Tags:** calculus\
**Created:** [September 15, 2021, 12:18pm UTC](https://community.wolfram.com/t/total-derivative-error/18845 "2021-09-15T12:18:34Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![nikolaskwok](https://avatars.discourse-cdn.com/v4/letter/n/b487fb/32.png) [@nikolaskwok](https://community.wolfram.com/u/nikolaskwok)\
**Post date:** [September 15, 2021, 12:18pm UTC](https://community.wolfram.com/t/total-derivative-error/18845/1 "2021-09-15T12:18:34Z")

</div>

Hi does anyone know why my total derivative command isn’t working? I’ve never encountered this error message before.

 ![mathematicabullshit.PNG](https://global.discourse-cdn.com/wolfram/original/3X/3/2/329d9ac0df649b06a45b04301ad9dbdd44fcbb77.png)

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<div class="post-metadata">

**Author:** ![rohitnamjoshi](https://avatars.discourse-cdn.com/v4/letter/r/f1d935/32.png) [@rohitnamjoshi](https://community.wolfram.com/u/rohitnamjoshi)\
**Post date:** [September 15, 2021, 1:04pm UTC](https://community.wolfram.com/t/total-derivative-error/18845/2 "2021-09-15T13:04:49Z")

</div>

`ClearAll` returns unevaluated which means it did not do anything. An argument needs to be provided. Try

```
ClearAll["Global`*"]

```

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<div class="post-metadata">

**Author:** ![wolframcommunity](https://yyz1.discourse-cdn.com/wolfram/user_avatar/community.wolfram.com/wolframcommunity/32/8335_2.png) [@wolframcommunity](https://community.wolfram.com/u/wolframcommunity)\
**Post date:** [September 15, 2021, 1:59pm UTC](https://community.wolfram.com/t/total-derivative-error/18845/3 "2021-09-15T13:59:14Z")

</div>

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