python - Solving equation using bisection method -


is there bisection method can find online, python?

for example, given these equations how can solve them using bisection method?

x^3 = 9   3 * x^3 + x^2 = x + 5   cos^2x + 6 = x

using scipy.optimize.bisect:

import scipy.optimize optimize import numpy np  def func(x):     return np.cos(x)**2 + 6 - x  # 0<=cos(x)**2<=1, root has between x=6 , x=7 print(optimize.bisect(func, 6, 7)) # 6.77609231632

optimize.bisect calls _zeros._bisect, implemented in c.


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