Z-Transform Definition

ROC, properties, standard pairs.

Darshan N
Updated: 19 March 2026
5 min read

Z-Transform Definition

Test your understanding of the Z-transform definition, its relation to Laplace, and convergence.

Question 1 of 3

Q1.The Z-transform of a discrete-time signal x[n] is defined as X(z) = sum from n = -inf to inf of x[n]*z^(-n). For the signal x[n] = a^n * u[n], what is X(z)?