Question

Please help me on this question:) Thank you!

Let R = [2 -1]
[1 0]
Find S such that
RS = SR = 1 = [1 0]
[0 1]
Explain each step.

Answer 1

Oops sorry that the matrices are scooted and uneven :'(

Answer 2

S is just the inverse of R

Answer 3

Since SR=RS= Identity matrix

Answer 4

Do you know how to find inverse matrices? Use Gauss Jordan Elimination exchanging [A:I] to [I:A^-1]

Answer 5

yep so solve

Answer 6

@catsarecool1995