# Matrix multiplied by inverse matrix does not reproduce identity matrix

**URL:** <https://discourse.julialang.org/t/matrix-multiplied-by-inverse-matrix-does-not-reproduce-identity-matrix/65706>\
**Category:** General Usage\
**Tags:** linearalgebra, inverse\
**Created:** [August 3, 2021, 12:14am UTC](https://discourse.julialang.org/t/matrix-multiplied-by-inverse-matrix-does-not-reproduce-identity-matrix/65706 "2021-08-03T00:14:17Z")\
**Posts on this page:** 1\
**Showing post:** 2

<div class="post-metadata">

**Author:** ![rafael.guerra](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/rafael.guerra/32/216610_2.png) [@rafael.guerra](https://discourse.julialang.org/u/rafael.guerra)\
**Post date:** [August 3, 2021, 12:58am UTC](https://discourse.julialang.org/t/matrix-multiplied-by-inverse-matrix-does-not-reproduce-identity-matrix/65706/2 "2021-08-03T00:58:02Z")

</div>

One solution is posted [here](https://discourse.julialang.org/t/how-to-print-a-number-to-x-digits/50526/3), for display purposes.

---

_[View the full topic](https://discourse.julialang.org/t/matrix-multiplied-by-inverse-matrix-does-not-reproduce-identity-matrix/65706)._