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Em5623

  • one year ago

Does the matrix 1 , 2 have an inverse? -2 , 4

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  1. satellite73
    • one year ago
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    so long as the determinant is not zero, it does

  2. itsmylife
    • one year ago
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    calculate the mod of the matrix

  3. satellite73
    • one year ago
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    the determinant of your matrix is \(1\times 4-2\times (-2)=8\) so you should be in good shape

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