I'm trying to make sense of this problem I got wrong on a quiz several weeks ago.
How does one find a residual vector of a linear combination?
I know how to find the linear combination, and I have a target vector -- not sure of what to do next.
Any help would be greatly appreciated.
Last edited by nehpets; April 7th 2011 at 09:00 PM.
Reason: to clarify my question
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Looks like an assessed piece of work.
Yes, as in already corrected (without explanation). I'm trying to find out what I did wrong before I am quizzed on this. I thought that would be compatible with the rules?
I think, now, that my mistake involved forgetting to subtract the vector I found (3, 3, -7, -7) from w, the target vector. (Found this idea on Wiki, of all places). Just wondering about the theory behind this, if anyone can explain the concept.
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