# AutoDiff of function inverse?

**URL:** <https://discourse.julialang.org/t/autodiff-of-function-inverse/75868>\
**Category:** Modelling & Simulations\
**Tags:** autodiff, inverse\
**Created:** [February 5, 2022, 5:35pm UTC](https://discourse.julialang.org/t/autodiff-of-function-inverse/75868 "2022-02-05T17:35:32Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![roflmaostc](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/roflmaostc/32/30123_2.png) [@roflmaostc](https://discourse.julialang.org/u/roflmaostc)\
**Post date:** [February 5, 2022, 6:05pm UTC](https://discourse.julialang.org/t/autodiff-of-function-inverse/75868/2 "2022-02-05T18:05:50Z")

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Just as comment, there was a similar question in the past

> [@Automatic inverse of a function?](https://discourse.julialang.org/t/automatic-inverse-of-a-function/53342/3):
>
> I hear you, yes. subpieces of the algorithm might not be invertibles. But what if the global algorithm is, indeed, invertible ? I mean, f(a,b) = (a+b, exp(a+2b)) is invertible, and you could get more creative.

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