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elementary matrices

elementary matrices

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Old 10-17-2006, 11:53 PM   #1
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elementary matrices
that is, a matrix representing a singel row operation. as in
Code:
[ 1 0 0 0 ]      =    A   [ 1 0 0 0 ]
[ 0 0 1 0 ]               [ 0 1 0 0 ]
[ 0 1 0 0 ]               [ 0 0 1 0 ]
[ 0 0 0 1 ]               [ 0 0 0 1 ]
where A is the elementary matrix.... in this case, what does A look like in order to interchange the two rows? help please?

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Old 10-18-2006, 12:10 AM   #2
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oh! i got it myself.
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I like peanut butter, and I like jam, so what's to stop me from putting them together? People do it all the time.
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