(25 points) Design an IIR low pass filter (from scratch) using Butterworth filter model to have a
frequency response as flat as possible in the passband. Consider T=1.
Filter Specification: Passband: 0.92<=|H(\omega )|^(2)<=1.0 for 0<=\omega <=0.2\pi
Stopband: |H(\omega )|^(2)<=0.01 for 0.4\pi <=\omega <=\pi
aT=1.
solve please