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fannen

  • one year ago

Linear Algebra : find a subset F of R^2 contains OR^2=(0,0) s.t F is not subspace.

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  1. vf321
    • one year ago
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    Pretty much anything that is not a line or the xy plane will work...

  2. fannen
    • one year ago
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    give me an example

  3. vf321
    • one year ago
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    Okay, let F be all (x, y) s.t. y <= 0. You can easily prove this is not a subspace, but it's a subset of R^2.

  4. fannen
    • one year ago
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    got it tanks

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