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... are [ a b c ], [ d e f ], [ g h i ]. Its determinant is

**aei**+ bfg + cdh - afh - bdi - ceg Then 2A will have rows [ 2a 2b 2c...1 Answers · Science & Mathematics · 26/05/2011

Determinant expanding by cofactors on the first row =a|ei-fh|-b|di-fg|+c|dh-eg| =

**aei**-afh-bdi+bfg+cdh-ceg1 Answers · Science & Mathematics · 09/11/2012

Determinant of: a b c d e f g h i is,

**aei**+ bfg + cdh - gec - hfa - idb1 Answers · Science & Mathematics · 25/02/2010

... (3) GHI (4) ADG (5) BEH (6) CFI (7)

**AEI**(8) CEG (9) AFH (10) BDI (11) CDH (12) BGF...2 Answers · Science & Mathematics · 20/05/2009

..., you can use the Rule of Sarrus, which means |a b c| =

**aei**+ bfg + cdh - ceg - fha - bdi. |d e f| |g h i| Which is far ...2 Answers · Science & Mathematics · 08/02/2014

Consider this [a b] [c d] DET = ad - bc [a b c] [d e f] [g h i] write it like this: [a b c] a b [d e f] d e [g h i] g h look at the diagonals DET = (

**aei**+ bfg + cdh) - (gec + hfa + idb)2 Answers · Science & Mathematics · 21/03/2011

...similar, the coefficient of similarity is | AE | : | AI | = cos 36° (∆

**AEI**is right) Then also | AK | : | AC | = cos 36°, but the latter...2 Answers · Science & Mathematics · 30/07/2009

...take it you know the determinant formula for a 3x3 matrix: |[a, b, c]| |[d, e, f ]| =

**aei**+bfg+cdh-ceg-bdi-afh |[g, h, i ]| Use it on your matrix. Fully...3 Answers · Science & Mathematics · 16/12/2010

...can use Sarus methode | a b c | | d e f | | g h i | D =

**aei**+ bfg + cdh - ceg - afh - bdi and the answer is for first one 20 and...1 Answers · Science & Mathematics · 17/08/2008

...off the left or right edge. Thus for | a b c | | d e f | | g h i | we get

**aei**+ bfg + cdh - afh - bdi - ceg. In this case the determinant is L^3...4 Answers · Science & Mathematics · 29/12/2006

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