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![[parent]](http://images.planetmath.org:8080/images/uparrow.png) Viewing Correction to 'rule of Sarrus'
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Confusion by uli
Correction id: 13102
Filed on: 2007-09-21 08:06:53
Status: Accepted on 2007-09-21 10:42:16
Type: Erratum
Correction text:
I think you confuse matrix and determinant. a11..a33 is the matrix, D the determinant, though you may write the matrix between the vertical lines (is there a name for these ?)to indicate you mean their determinant. So you can't add columns to D to obtain a 3x5 matrix, since D is a scalar. You may name the matrix M, as in the entry "determinant", and then could write D = |M|= |a11...a33|
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Comment from object owner pahio:
Now I clarified the text in the parentheses by saying "seeing"; of course you must then forget the vertical determinant lines =o)
Gruesse aus Finnland
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