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Topic: What am I missing?
Replies: 5   Last Post: Nov 23, 2012 5:30 PM

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Greg Heath

Posts: 5,954
Registered: 12/7/04
Re: What am I missing?
Posted: Nov 23, 2012 5:30 PM
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"Roger Stafford" wrote in message <k8mbrg$va$1@newscl01ah.mathworks.com>...
> "Greg Heath" <heath@alumni.brown.edu> wrote in message <k8m4qf$8de$1@newscl01ah.mathworks.com>...
> > >>A1= round(rand(1,5))
> > A2 = 1-A1
> > A = [ A1 ; A2 ]
> > Why isn't rankA = 1?

> - - - - - - - - -
> For A1 and A2 to be linearly dependent requires that there exist two real or complex numbers, c1 and c2, not both zero, such that c1*A1 + c2*A2 = 0. The equality A2 = 1-A1 doesn't qualify for that.


OK!

It's hard to believe I've gotten that screwed up in my mind ... What next?

Thanks.

Greg



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