# Knowing what package a function is from?

**URL:** <https://discourse.julialang.org/t/knowing-what-package-a-function-is-from/49258>\
**Category:** General Usage\
**Tags:** package\
**Created:** [October 29, 2020, 7:35pm UTC](https://discourse.julialang.org/t/knowing-what-package-a-function-is-from/49258 "2020-10-29T19:35:26Z")\
**Posts on this page:** 1\
**Showing post:** 6

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**Author:** ![oxinabox](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/oxinabox/32/206603_2.png) [@oxinabox](https://discourse.julialang.org/u/oxinabox)\
**Post date:** [October 29, 2020, 9:30pm UTC](https://discourse.julialang.org/t/knowing-what-package-a-function-is-from/49258/6 "2020-10-29T21:30:52Z")

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Calculus.jl is ancient and should not be used

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_[View the full topic](https://discourse.julialang.org/t/knowing-what-package-a-function-is-from/49258)._