In [9]: %run phugoid.py
        %matplotlib inline

In [1]: plot_flight_path(64, 16, 0)

---------------------------------------------------------------------------
NameError                                 Traceback (most recent call last)
<ipython-input-1-e57d3fb06a4a> in <module>()
      1 #zt = 64, z = 16, theta = 0
----> 2 plot_flight_path(64, 16, 0)

NameError: name 'plot_flight_path' is not defined