Question

Find the inverse of matrix.

1 -1
[ ]
2 3


​

Answer 1

Answer:

M11 = 3 M12= -2

M21= 1 M22= 1

[3 -2 = [ 3 1

1 1] -2 1]

A-1 =1/|A| × adj A = 1/5[3 1

-2 1]