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Posted to issues@commons.apache.org by "Bogdan Bezpartochnyy (JIRA)" <ji...@apache.org> on 2014/01/26 20:42:38 UTC

[jira] [Closed] (MATH-1094) Incorrect linear system solution

     [ https://issues.apache.org/jira/browse/MATH-1094?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Bogdan Bezpartochnyy closed MATH-1094.
--------------------------------------

    Resolution: Invalid

> Incorrect linear system solution
> --------------------------------
>
>                 Key: MATH-1094
>                 URL: https://issues.apache.org/jira/browse/MATH-1094
>             Project: Commons Math
>          Issue Type: Bug
>    Affects Versions: 3.2
>         Environment: Oracle JDK7
> Linux x86-64
>            Reporter: Bogdan Bezpartochnyy
>              Labels: patch
>         Attachments: Main.java
>
>
> Firstly I would like to point out that I'm not very proficient in linear algebra, but in my opinion the following behavior should not occur. When I solve the following linear system by hand it has no solution, but in commons math using QRDecomposition it outputs  x1= 7.5 x2 = 5.5



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