Using the Nyquist criterion, find out whether each system of is stable. [Section: 10.3]

2/14/2017 dis04 In [1]: import numpy as np from datascience import * # These lines set up graphing capabilities. import matplotlib %matplotlib inline import matplotlib.pyplot as plt plt.style.use('fivethirtyeight') import warnings warnings.simplefilter('ignore', FutureWarning) In [2]: avg = np.mean In [3]: colors = np.array(['Red', 'Green', 'Blue', 'Red', 'Green', 'Green']) amounts = np.array([4, 6, 12, 7, 9, 2]) prices = np.array([1.30, 1.20, 2.0, 1.75, 1.40, 1.0]) marbles = Table().with_column