hi, I'm studying for a test, and found this question in one of the previous exams but there is no solution and I was not able to solve it myself. It would be very helpful if anybody could help =] 1. The problem statement, all variables and given/known data h(t) is an analog IIR filter, with the poles λ_1 = -1, λ_2 = -1+i, λ_3 = -1-i and no zeros. let h[n] be a digital IIR filter with poles which defined by e^λ_i and no zeros. is h[n] a high pass filter? 2. Relevant equations -- 3. The attempt at a solution I thought about using some transformation or something like that but i got stuck, and was unable to prove/disprove. Thanks.