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mrtuba

  • 2 years ago

how many pivot columns must a 4x6 matrix have if its columns span R4

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  1. mrtuba
    • 2 years ago
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    I believe it is 4 but can no give a good reason why

  2. e.mccormick
    • 2 years ago
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    Yes, it only spans a much as it has unique rows and unique columns of.

  3. e.mccormick
    • 2 years ago
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    Some proofs related to this: http://www.math.northwestern.edu/~clark/285/handouts/col-basis.pdf Not exactly it, but they talk about the column span.

  4. mrtuba
    • 2 years ago
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    thank you

  5. e.mccormick
    • 2 years ago
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    np. have fun!

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