Confusion related to finding inverse Z-Transform using Complex Integral Method

1. How do you find the inverse Z-transform in Matlab?
2. What is Z-transform and inverse Z-transform?
3. What is the inverse Z-transform of 1 z?

How do you find the inverse Z-transform in Matlab?

iztrans( F ) returns the Inverse Z-Transform of F . By default, the independent variable is z and the transformation variable is n . If F does not contain z , iztrans uses the function symvar . iztrans( F , transVar ) uses the transformation variable transVar instead of n .

What is Z-transform and inverse Z-transform?

Z-Transform is basically a discrete time counterpart of Laplace Transform. Z-transform of a general discrete time signal is expressed in the equation-1 above. The range of values of 'Z' for which above equation is defined gives ROC (Reason of Convergence) of Z-transform.

What is the inverse Z-transform of 1 z?

The Z-transform of a sequence an is defined as A(z)=∑∞n=−∞anz−n. In your case, A(z)=1/z=z−1, so this must mean an=0 for all n≠1, and a1=1. We don't need any fancy computations in this example, we just read off the one nonzero coefficient directly from A.