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October 10th, 2011, 10:40 AM   #1
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determinant

To calculate the determinant of the following matrix, I would like to ask is it possible to eliminate any lines,because I don't see how

1)
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October 10th, 2011, 10:50 AM   #2
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Re: determinant

By subtracting the third row from the second, you have

(0 2a 0) for the second row. Then doing cofactor expansion will be a breeze.
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