# Problems with Diagonal from LinearAlgebra

**URL:** <https://discourse.julialang.org/t/problems-with-diagonal-from-linearalgebra/26429>\
**Category:** General Usage\
**Tags:** question, package, linearalgebra\
**Created:** [July 16, 2019, 3:28pm UTC](https://discourse.julialang.org/t/problems-with-diagonal-from-linearalgebra/26429 "2019-07-16T15:28:02Z")\
**Posts on this page:** 1\
**Showing post:** 6

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**Author:** ![Tamas\_Papp](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/tamas_papp/32/25949_2.png) [@Tamas\_Papp](https://discourse.julialang.org/u/Tamas_Papp)\
**Post date:** [July 16, 2019, 4:01pm UTC](https://discourse.julialang.org/t/problems-with-diagonal-from-linearalgebra/26429/6 "2019-07-16T16:01:32Z")

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> [@cholt](#):
>
> Agreed, but if all I’m doing is overwriting some variables, why does that change things

By changing the inputs, the functions give different results.

> [@cholt](#):
>
> And how can I prevent that from happening?

It is hard to answer this without concrete code.

> [@cholt](#):
>
> Furthermore it is defined within a function

It would be much easier to help you if you provided the a self-contained example that demonstrates the problem in a freshly started Julia session.

> [@Please read: make it easier to help you](https://discourse.julialang.org/t/psa-make-it-easier-to-help-you/14757):
>
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