# Solution {-}
Factor spectral density function $S(s)$:


```python
from sympy import symbols, factor

s = symbols('s')

S = (-s**2 + 1)/(s**4 - 8*s**2 + 16)
S
```




$\displaystyle \frac{1 - s^{2}}{s^{4} - 8 s^{2} + 16}$




```python
factor(S, s)
```




$\displaystyle - \frac{\left(s - 1\right) \left(s + 1\right)}{\left(s - 2\right)^{2} \left(s + 2\right)^{2}}$



b5010f81bdbee3316ebdd7f6aa7b387d5eeb69a4
ipynb
Jupyter Notebook
Problem 3.6.ipynb
mfkiwl/GMPE340
3602b8ba859a2c7db2cab96862472597dc1ac793
MIT
2021-09-07T09:36:36.000Z
2021-09-07T09:36:36.000Z
Problem 3.6.ipynb
mfkiwl/GMPE340
3602b8ba859a2c7db2cab96862472597dc1ac793
MIT
Problem 3.6.ipynb
mfkiwl/GMPE340
3602b8ba859a2c7db2cab96862472597dc1ac793
MIT
2021-09-20T18:48:20.000Z
2021-09-20T18:48:20.000Z
Qwen/Qwen-72B
1. YES
2. YES