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First, I'm trying to use the MATLAB or SciPy function ellipap to find the poles, zeros, and gain for a third-order normalized elliptic lowpass filter with 2 dB ripple in the passband and stopband ripple that has an upper limit of -50 dB. I think I got this part right.  Then using one of the programs I need to find the coefficients of the numerator and denominator of the transfer function. Then I need to plot the frequency response.  I understand how to use the program for the first part, but I'm unsure how to find the second part. Could you share with me how to approach this?  Thank you for your time and help

First, I'm trying to use the MATLAB or SciPy function ellipap to find the poles, zeros, and gain for a third-order normalized elliptic lowpass filter with 2 dB ripple in the passband and stopband ripple that has an upper limit of -50 dB. I think I got this part right.  Then using one of the programs I need to find the coefficients of the numerator and denominator of the transfer function. Then I need to plot the frequency response.  I understand how to use the program for the first part, but I'm unsure how to find the second part. Could you share with me how to approach this?  Thank you for your time and help

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...
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First, I'm trying to use the MATLAB or SciPy function ellipap to find the poles, zeros, and gain for a third-order normalized elliptic lowpass filter with 2 dB ripple in the passband and stopband ripple that has an upper limit of -50 dB. I think I got this part right. 

Then using one of the programs I need to find the coefficients of the numerator and denominator of the transfer function. Then I need to plot the frequency response. 

I understand how to use the program for the first part, but I'm unsure how to find the second part. Could you share with me how to approach this?  Thank you for your time and help 

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