SOLUTION: Please help me with this question. Find the inverse, if it exists, for each of the following matrices. There is a bracket on each side of this equation, (I didn't know how to in

Algebra ->  Inverses -> SOLUTION: Please help me with this question. Find the inverse, if it exists, for each of the following matrices. There is a bracket on each side of this equation, (I didn't know how to in      Log On


   

Question 300297: Please help me with this question.
Find the inverse, if it exists, for each of the following matrices.
There is a bracket on each side of this equation, (I didn't know how to insert it)
0 1 -1
2 -2 -1
-1 1 1
Thank you!!!
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
[A]=%28matrix%283%2C3%2C0%2C1%2C-1%2C2%2C-2%2C-1%2C-1%2C1%2C1%29%29
det([A])=-1 so an inverse does exist.
[A]inv=%28matrix%283%2C3%2C1%2C2%2C3%2C1%2C1%2C2%2C0%2C1%2C2%29%29
I used EXCEL's MINVERSE function to find the inverse of [A].