In partial fraction expansion method, the function X(z) is expressed as follows:
where α1, α2, α3, ............ and αm are the constants and X1(z), X2(z), X3(z), ........., Xm(z) are the standard z-transforms. The inverse transform of these standard z-transform are known. Using linearity property we can write
If the z-transform is rational in nature which can be expressed as the ratio of two polynomials as follows
Let b0 = 1. If b0 ≠ 1, the polynomials ...