#!/usr/bin/env python
# coding: utf-8

# In[1]:


# reference: https://wikidocs.net/65

import pandas as pd
from pylab import *

get_ipython().run_line_magic('matplotlib', 'inline')

x = linspace(-2, 2, 10000)
f = lambda x: sqrt(cos(x)) * cos(80*x) + 0.5*sqrt(abs(x))

plt.plot(x, f(x))


# In[5]:


# reference: https://www.quora.com/How-can-I-draw-a-heart-using-Python

from pylab import *
get_ipython().run_line_magic('matplotlib', 'inline')

t = arange(0,2*pi, 0.1)
x = 16*sin(t)**3
y = 13*cos(t)-5*cos(2*t)-2*cos(3*t)-cos(4*t)
plt.plot(x,y)


# In[6]:


#%reset