`tt(#AKE E)`

`A=[3n-4]/[2-n] (n in ZZ, n ne 2)`

`A=[3n-6+2]/[-(n-2)]`

`A=-3+2/[n-2]`

`A` nguyên khi

`2/[n-2] in ZZ`

`=> 2 vdots n-2`

`=> n-2 in Ư(2)`

`=> n in {3;1;4;0}` là các gtri thỏa ycbt