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#1 Re: Help Me ! » determinants » 2007-06-22 05:56:06

lexmark

could you please show me step by step b is correct

#2 Re: Help Me ! » determinants » 2007-06-21 17:37:45

lexmark

please help me

#3 Re: Help Me ! » determinants » 2007-06-21 17:37:21

lexmark

Cofactor

#4 Help Me ! » determinants » 2007-06-21 17:35:54

lexmark
Replies: 5

for the matrix A=4 -2 9
                        10 3 9
                        -6 7 1

a. find the minor of the element 3

b. find the coafactor of the element 7


answer is a. M22= 4  9
                           -6 1

b. is C32=- 4 9
                 10 9

I understand a. answer
I do not understand b. answer i do not understand how 10 and 9  is the answer.

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