Answer Happy

Please can you solve it on your own. Kindly do not copy the expert's solution. If you don't know it leave it to another one I need to understand it. Otherwise, I will downvote. Thank you
QUESTION 2 Problem 2: An analog signal xc (t) with a bandwidth of 75 kHz is sampled at a rate of 180,000 samples/s and then passed through a staircase D/A converter to produce the analog signal y(t). We need an anti-imaging filter to remove the images. The order of the filter is given as AF Fpass where AF is the transition bandwidth and Fpass is the passband edge frequency. N = For the toolhar pra 4.5 log10 1+ (a) Find Fpass, Fstop and AF. (b) Calculate the order of the filter required.