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Math Help - Determinant

  1. #1
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    Determinant

    using property of determinant and without expanding prove that
    [1 1+p 1+p+q ]
    [2 3+2p 1+3p+2q ] =i
    [3 6+3p 1+6p+3q ]
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  2. #2
    Super Member girdav's Avatar
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    Re: Determinant

    Consider the third line, and do L_3\leftarrow L_3-L_2-L_1.
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