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35 lines
739 B
35 lines
739 B
3 years ago
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#!/usr/bin/python
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import numpy as np
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def nullfunc(x):
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return 0
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def derive(x: float, func=nullfunc, dx=0.1):
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return (func(x+dx) - func(x))/dx
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def new_rap(x, func=nullfunc, dx=0.1):
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new_x = None
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try:
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while x != new_x:
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y = func(x)
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der = derive(x, func, dx)
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new_x = x - y/der
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if new_x == x:
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return new_x
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else:
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x = new_x
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return x
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except ZeroDivisionError as error:
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print(f"{y=} {der=} {new_x=}")
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print(error)
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def myfunc(x):
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return 2*x - 2*(x**2) * np.sin(x) + 0.1
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if __name__ == "__main__":
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out = new_rap(3, myfunc, 0.00000001)
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print(f"x={out}")
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print(f"f(x)={myfunc(out)}")
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