I am trying to calculate some polynomials given an input numerator and denominator polynomials as coefficient arrays.
How can I create my polynomials from these arrays?
E.g:
Inputs:
den= [2,3,4]
num= [1,3]
Output:
(s+3)/(s^2+3*s+4)
I need to use symbols because I will further need to divide the results by other polynomials and perform further polynomial computations.
P.S Is sympy suitable for this? I would usually solve things like this in matlab but I want to expand my knowledge.
I think what you want is (s+3)/(2*s^2+3*s+4), there is a typo in your original expression. And in Python, ^ is not power, power is **.
You just need a ordinary Python list comprehension:
from sympy import poly
from sympy.abc import s
den_ = sum(co*s**i for i, co in enumerate(reversed(den)))
num_ = sum(co*s**i for i, co in enumerate(reversed(num)))
res = num_/den_