+0  
 
+5
286
1
avatar+266 

 

 

 Jan 15, 2016

Best Answer 

 #1
avatar+96262 
+15

7   Det  = [ 5 * 3] - [5 * 2]   = 15 - 10  = 5

 

 

 

8  Det......copy the first two columns again

 

3   5   2   3   5

5   3   1   5   3

2   4   2   2   4

 

Multiply down the diagonals and sum the products

 

[ (3 * 3 * 2) + (5 * 1 * 2) + (2 * 5 * 4)]  =    [ 18 + 10 + 40 ]   =  68

 

Multiply up the diagonals and sum the products

 

[ (2 * 3 * 2) + (4 * 1 * 3)  + ( 2 * 5 * 5) ]  =  [ 12 + 12 + 50] =  74

 

Subtract the second result from the first

 

Det  = 68 - 74   = - 6

 

 

cool cool cool

 Jan 15, 2016
 #1
avatar+96262 
+15
Best Answer

7   Det  = [ 5 * 3] - [5 * 2]   = 15 - 10  = 5

 

 

 

8  Det......copy the first two columns again

 

3   5   2   3   5

5   3   1   5   3

2   4   2   2   4

 

Multiply down the diagonals and sum the products

 

[ (3 * 3 * 2) + (5 * 1 * 2) + (2 * 5 * 4)]  =    [ 18 + 10 + 40 ]   =  68

 

Multiply up the diagonals and sum the products

 

[ (2 * 3 * 2) + (4 * 1 * 3)  + ( 2 * 5 * 5) ]  =  [ 12 + 12 + 50] =  74

 

Subtract the second result from the first

 

Det  = 68 - 74   = - 6

 

 

cool cool cool

CPhill Jan 15, 2016

29 Online Users

avatar
avatar
avatar

New Privacy Policy

We use cookies to personalise content and advertisements and to analyse access to our website. Furthermore, our partners for online advertising receive information about your use of our website.
For more information: our cookie policy and privacy policy.