<jupyter_start><jupyter_text>my first notebook<jupyter_code>print("my first notebook")<jupyter_output>my first notebook<jupyter_text>1print the variable a.the value of a is 1.    1. a is 1    2. b is 2    3. c is 4    [jmu](http://www.jmu.edu)same for image but with !![image](https://www.jmu.edu/_images/_story-rotator/full-width-images/Combo-GIcampus-2000x666.jpg)<jupyter_code>a = 1

b = 2
a + b 
c = 4
print (c)
%matplotlib inline
import numpy as np
import matplotlib.pyplot as plt

X = np.linspace(-np.pi, np.pi, 256, endpoint=True)
C, S = np.cos(X), np.sin(X)

plt.plot(X, C)
plt.plot(X, S)

plt.show()
!pip install numpy
import numpy
print(numpy)<jupyter_output><module 'numpy' from '/home/ec2-user/anaconda3/envs/python3/lib/python3.6/site-packages/numpy/__init__.py'>
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