Engineering Tables/Z Transform Table

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Signal, x[n] Z-transform, X(z) ROC
1 δ[n] 1 all z
2 δ[nn0] 1zn0 all z
3 u[n] zz1 |z|>1
4 anu[n] 11az1 |z|>|a|
5 nanu[n] az1(1az1)2 |z|>|a|
6 anu[n1] 11az1 |z|<|a|
7 nanu[n1] az1(1az1)2 |z|<|a|
8 cos(ω0n)u[n] 1z1cos(ω0)12z1cos(ω0)+z2 |z|>1
9 sin(ω0n)u[n] z1sin(ω0)12z1cos(ω0)+z2 |z|>1
10 ancos(ω0n)u[n] 1az1cos(ω0)12az1cos(ω0)+a2z2 |z|>|a|
11 ansin(ω0n)u[n] az1sin(ω0)12az1cos(ω0)+a2z2 |z|>|a|