from scipy.signal import TransferFunction, lti
numerator = 1.0
denominator = [-22.0, 0, 21.0 * 9.8]
tf = TransferFunction(lti(numerator, denominator))
print("Transfer Function: {0}".format(tf))
print("Poles: {0}".format(tf.poles))
print("Zeros: {0}".format(tf.zeros))
zero_input = tf.output(0)
print(zero_input)
