#!/usr/bin/python
# -*- coding: utf8 -*-

import matplotlib.pyplot as plt
import matplotlib as mpl
import numpy as np
from math import *

code_website = 'http://commons.wikimedia.org/wiki/User:Geek3/mplwp'
try:
    import mplwp
except ImportError, er:
    print 'ImportError:', er
    print 'You need to download mplwp.py from', code_website
    exit(1)

name = 'mplwp_polynomialdeg5.svg'
fig = mplwp.fig_standard(mpl)

xlim = -3.5,2.5; fig.gca().set_xlim(xlim)
ylim = -14, 16; fig.gca().set_ylim(ylim)
mplwp.mark_axeszero(fig.gca())

f = lambda x: 12 + 4 * x - 15 * x**2 - 5 * x**3 + 3 * x**4 + x**5
x = np.linspace(xlim[0], xlim[1], 5001)
y = [f(xx) for xx in x]
plt.plot(x, y, label=u'12 + 4x - 15x\u00B2 - 5x\u00B3 + 3x\u2074 + x\u2075')

plt.legend(loc=(0.08,0.08)).get_frame().set_alpha(0.9)
    
plt.savefig(name)
mplwp.postprocess(name)