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Determinants between two similar matrices

  1. Nov 13, 2013 #1
    Lets suppose a 4×4 matrix A has two identical rows with some other 4×4 matrix B. Does that imply there determinant is equal? Or does it really say nothing about how the determinants of the two matrices are related.
  2. jcsd
  3. Nov 14, 2013 #2


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    As long as the other rows may be different, the determinants may be different.
  4. Nov 14, 2013 #3


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    Why should two identical rows imply equality of determinants? The value of the determinant involves ALL of the elements of a matrix.
  5. Nov 14, 2013 #4
    I mistakingly asked this question prematurely--not releasing that I could of easily performed row operations to enable the determinants of the two matrices to be the same.
  6. Nov 15, 2013 #5


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    So would you mind now telling us what the question really is?
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