Using properties of determinants prove that:
[R1’ = R1 - R2 & R2’ = R2 - R3]
[R1’ = R1/(a - 1) & R2’ = R2/(a - 1)]
= (a - 1)2[a + 1 - 0 - 2] [expansion by first row]
= (a - 1)3
1
Using properties of determinants prove that:
[R1’ = R1 - R2 & R2’ = R2 - R3]
[R1’ = R1/(a - 1) & R2’ = R2/(a - 1)]
= (a - 1)2[a + 1 - 0 - 2] [expansion by first row]
= (a - 1)3