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1. ### Basic Matrices.. Help Please.?

... 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 · 25/05/2011

2. ### Applied Linear Algebra?

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

3. ### A couple math questions...?

...addition of \ diagonals minus / diagonals, in other words aei + bfg + cdh - bdi - afh - ceg. (Do you see why I mentioned \...

1 Answers · Science & Mathematics · 26/01/2011

4. ### Matrices help how do i do this!?

determinant of a 3x3 matrix is = aei + bfg + cdh - afh - bdi - ceg where the matrix variables are: [a b c] [d e f] [g h i]

1 Answers · Science & Mathematics · 01/12/2010

5. ### matrices kill me! why did I get these wrong!?!?

...1=-2 a b c d e f g h i the -2 is derived from this, aei+bfg+cdh-ceg-bdi-afh=determinant yes AB is multiplying ...

2 Answers · Science & Mathematics · 30/07/2010

6. ### show that in 3 x 3 determinant if one row is 0, the value of the determinant is 0?

a b c d e f g h i the value of this determinant is aei + bfg + cdh - ceg - afh - bdi if one row is zero then all the components are zero and sum of them is zero too

3 Answers · Science & Mathematics · 05/05/2010

7. ### how do you find the detirminant of a 3*3 matrix?

Determinant of: a b c d e f g h i is, aei + bfg + cdh - gec - hfa - idb

1 Answers · Science & Mathematics · 25/02/2010

8. ### TRIANGLE PUZZLE:See Link For Details?

..., ABI, ABJ ACD, ACE ADE AEG, AEI, AEJ AIJ BCF, BCI BDJ BEH, ...

2 Answers · Science & Mathematics · 12/12/2009

9. ### impossible math question!?

...be with F and G while C is with D and H. AEI BFG CDH 4th day, we select the remaining groups...

2 Answers · Science & Mathematics · 19/09/2012

10. ### How to show detA=0, then det(adjA)=0 if A is a 3x3matrix?

...d e f | |g h i | then its determinant is : det (A) = aei − afh + bfg − bdi + cdh − ceg. 1) Equate that to 0 and you have equation...

2 Answers · Science & Mathematics · 13/10/2009