In [28]:

    

import numpy as np
from __future__ import division
from sympy import *
from matplotlib import pyplot as plt
%matplotlib inline


    

In [29]:

    

X = np.arange(-3, 4)
X


    

    
Out[29]:





array([-3, -2, -1,  0,  1,  2,  3])

In [30]:

    

def f(x):
    return x**2 + 1


    

In [31]:

    

f(X)


    

    
Out[31]:





array([10,  5,  2,  1,  2,  5, 10])

In [32]:

    

plt.scatter(X, f(X))
plt.show()


    

In [36]:

    

x = symbols('x')

plot(sin(x))
plt.show()


    

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