homework_2018_1_02_1216730080.ipynb

Kernel: Python 3

Encontrar las tres raices de $x^2 \cos 2x$

import numpy as np
from scipy import optimize 
def f(x):
    return x**2*np.cos(2*x)

def g(x):
    return x-f(x)

root1=optimize.fixed_point(g,-1.0)
root2=optimize.fixed_point(g,0.0)
root3=optimize.fixed_point(g,1.0)

print("las raices son x={} x={} x={}".format(root1,root2,root3))

las raices son x=-0.7853981633974483 x=0.0 x=0.7853981633974483