Please provide Handwritten answer. A digital filter is described according to its difference function, which is written below. Find the filter amplitude and phase function. What is the value of the...

A digital filter is described according to its difference function, which is written below. Find the filter amplitude and phase function. What is the value of the amplitude gain and the phase shift at frequency ꙍ = 1 rad / sec? The sampling time is h = 1 sec.

H(z)= z^-2

LAST PART IS THE FUNCTION PLS SOLVE ASAP