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Compute the determinant

  1. Apr 12, 2006 #1
    Hi guys, what doe it mean when we are asked to compute the determinant the following way:

    compute determinant across first row, down second column:

    I know how to compute but here I need to understand the way to do it.

    Thank you
  2. jcsd
  3. Apr 12, 2006 #2


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    They are likely asking you to compute the determinant in two ways:
    (1) Across the first row
    (2) Down the second column
    As you know, you can expand the determinant across any row or column.
  4. Apr 12, 2006 #3


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    It's talking about "expanding by minors". Do you know how to do that?
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