SOLUTION: Dear tutors, i don`t understand how to find the matrix inverse, please if you can help to me. it is a matrix 3x3 -4 3 2 1 -32 1 6 -2 -1 Help me once again plea

Algebra ->  Linear-equations -> SOLUTION: Dear tutors, i don`t understand how to find the matrix inverse, please if you can help to me. it is a matrix 3x3 -4 3 2 1 -32 1 6 -2 -1 Help me once again plea      Log On


   

Question 390553: Dear tutors, i don`t understand how to find the matrix inverse, please if you can help to me.
it is a matrix 3x3
-4 3 2
1 -32 1
6 -2 -1
Help me once again please, it is very important for me!!!!
Beforehand thanks to you!!!!
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!



Hi



A=%28matrix%283%2C3%2Ca1%2Cb1%2Cc1%2Ca2%2Cb2%2Cc2%2Ca3%2Cb3%2Cc3%29%29 =%28matrix%283%2C3%2C-4%2C3%2C2%2C1%2C-32%2C1%2C6%2C-2%2C-1%29%29

I. first find value of determinant: d =  a1(b2c3-c2b3) - b1(a2c3-c2a3) + c1(a2b3-b2a3) 

II. Then Apply formula for the Inverse: 

|A| = 1/d