# Incorrect jacobian using ForwardDiff and sparse functions

**URL:** <https://discourse.julialang.org/t/incorrect-jacobian-using-forwarddiff-and-sparse-functions/79901>\
**Category:** Numerics\
**Tags:** differentiation, forwarddiff\
**Created:** [April 23, 2022, 4:33pm UTC](https://discourse.julialang.org/t/incorrect-jacobian-using-forwarddiff-and-sparse-functions/79901 "2022-04-23T16:33:00Z")\
**Posts on this page:** 1\
**Showing post:** 5

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**Author:** ![mcabbott](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/mcabbott/32/6603_2.png) [@mcabbott](https://discourse.julialang.org/u/mcabbott)\
**Post date:** [April 23, 2022, 6:30pm UTC](https://discourse.julialang.org/t/incorrect-jacobian-using-forwarddiff-and-sparse-functions/79901/5 "2022-04-23T18:30:30Z")

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This seems to be another example of the problem fixed by [#481](https://github.com/JuliaDiff/ForwardDiff.jl/pull/481), like [this post](https://discourse.julialang.org/t/forwarddiff-and-zygote-return-wrong-jacobian-for-log-det-l/77961).

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