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26 lines
506 B
Python
26 lines
506 B
Python
"""Newton's Method."""
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# Newton's Method - https://en.wikipedia.org/wiki/Newton%27s_method
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# function is the f(x) and function1 is the f'(x)
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def newton(function, function1, startingInt):
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x_n = startingInt
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while True:
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x_n1 = x_n - function(x_n) / function1(x_n)
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if abs(x_n - x_n1) < 10 ** -5:
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return x_n1
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x_n = x_n1
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def f(x):
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return (x ** 3) - (2 * x) - 5
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def f1(x):
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return 3 * (x ** 2) - 2
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if __name__ == "__main__":
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print(newton(f, f1, 3))
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