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From: Greg Heath <heath@alumni.brown.edu>
Newsgroups: comp.soft-sys.matlab
Subject: Re: Null space, empty matrix 5-by-0 error
Date: Sun, 5 Jun 2011 12:13:42 -0700 (PDT)
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On Jun 5, 2:59 pm, Greg Heath <he...@alumni.brown.edu> wrote:
> On Jun 5, 2:17 pm, "Alan` " <alan_ec...@hotmail.com> wrote:
>
> > so i'm making this program to find the basis for the null space of A and B where B=A tranpose>> in put
>
> > function projecttwo (y,o,u,r,U,F,i,d)
> > A=[ 1 2 3 4 5 6 7 8; 1 4 9 16 25 36 49 64; 1 8 27 64 125 216 343 512; 1 16 81 256 625 1296 2401 4096; y o u r U F i d];
> > B=A.';
> > %null spaces of A and B
>
> > nullA=null(A)
> > nullB=null(double(B))
>
> > end
>
> > >>output after entering my the last row
>
> Well, what is your last row?
>
> Greg

Nevermind. I just used (1:8).^5 and got the same result.

Then it became obvious: Think of A as representing
8 variables constrained by only 5 equations.

You can fill in the blanks.

Hope this helps,

Greg