SOLUTION: how to find the adjoint of a 3 by 3 matrix

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Question 612416: how to find the adjoint of a 3 by 3 matrix
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi, 

Take the ex 

A=%28matrix%283%2C3%2Ca1%2Cb1%2Cc1%2Ca2%2Cb2%2Cc2%2Ca3%2Cb3%2Cc3%29%29 =%28matrix%283%2C3%2C1%2C1%2C1%2C3%2C5%2C4%2C3%2C6%2C5%29%29

Apply:



Adjoint of matrix is:

%28matrix%283%2C3%2C1%2C1%2C-1%2C-3%2C2%2C-1%2C3%2C-3%2C2%29%29