Computing H⁻¹: Tables and Long Division

The viewer can (1) turn a weighting sequence h(k) into a closed-form H(z) with the z-transform table, (2) long-divide two polynomials in z⁻¹ to get h̃(0), h̃(1), h̃(2) …, (3) check the answer by multiplying H·H⁻¹, (4) solve the practice problem.