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Re: ax=0
From: |
weino001 |
Subject: |
Re: ax=0 |
Date: |
Tue, 24 Aug 2004 08:08:12 +0200 |
User-agent: |
Internet Messaging Program (IMP) 3.2.3 |
That seems to be exactly the script i was searching for ..
Thank you very much!
Oliver
Quoting grumpy steve <address@hidden>:
> >Quoting weino001 at students dot uni-mainz dot de:
> >the right term is of course "underdetermined linear equations" - sorry
> >>
> >> Is there a script available for solving undetermined linear equation ax =
> 0
> >> (more equations than variables, i need all solutions)? If not, what is
> the
> >> best way to solve it with octave.
> >>
> >> Thanks for any help
> >> Oliver
> >>
>
> What you need to find is the null space of a. Octave provides a function to
> do exactly that:
>
> NullSpace = null(a)
>
> Now, any x that can be expressed as a linear combination of the columns of
> NullSpace is a solution to a x = 0
>
> If NullSpace is an empty matrix, then this implies that the only solution is
> x=0.
>
> Steve
>
>
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-------------------------------------------------------------
- ax=0, weino001, 2004/08/23
- Re: ax=0, weino001, 2004/08/23
- Message not available
- Message not available
- Re: ax=0, Geraint Paul Bevan, 2004/08/23
- ax=0, grumpy steve, 2004/08/23