Inverting and solving equations
Find the inverse of that matrix, hence solve the followingCode:1 -2 1 3 1 2 -1 4 1
I have 2 more equations to solve, but I just need a quick rundown of the process
To invert, I found the determinant (answer for it was -4 if anyone could confirm to see if I did the method right)
I then took the transpose, and prcoeeded to complete that big 3x3 thing which involves taking the multiplication of diagonal "\" and add it to the multiplication of diagonal "/".
The result of both the transpose and that process gave me this answer:
What made me doubt everything was that the 3 equations given simply don't match up with either the inverse of the provided matrix, with the matrix itself, or anything similar that I can recall.Code:9 -6 5 -1 0 -5 11 -2 7
Any help on this would be much appreciated.