Question

Find the inverse of the following matrix.

Answer 1

Or atleast explain the steps for it.

Answer 2

inverse A = 1/det times A times [1 -1;-1 1]

Answer 3

or use gauss rule, wich would be easier in this case

Answer 4

1. Find the determinate
2. Rewrite the matrix: interchange the 11 and 2 and change 7 and 3 to their opposites.
3. Multiply the new matrix from step 2 by 1/result of step 1

Answer 5

So my answer would be: