# How to implement AD for this function?

**URL:** <https://discourse.julialang.org/t/how-to-implement-ad-for-this-function/60623>\
**Category:** General Usage\
**Tags:** differentiation, autodiff\
**Created:** [May 6, 2021, 6:13am UTC](https://discourse.julialang.org/t/how-to-implement-ad-for-this-function/60623 "2021-05-06T06:13:18Z")\
**Posts on this page:** 1\
**Showing post:** 10

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**Author:** ![amrods](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/amrods/32/2543_2.png) [@amrods](https://discourse.julialang.org/u/amrods)\
**Post date:** [May 7, 2021, 9:03am UTC](https://discourse.julialang.org/t/how-to-implement-ad-for-this-function/60623/10 "2021-05-07T09:03:51Z")

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yeah, i missed that bang at the end, see [A bug in ForwardDiff? - #4 by amrods](https://discourse.julialang.org/t/a-bug-in-forwarddiff/60691/4)

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