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29 lines
533 B
Python
29 lines
533 B
Python
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# Implementing Secant method in Python
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# Author: dimgrichr
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from math import exp
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def f(x):
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"""
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>>> f(5)
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39.98652410600183
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"""
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return 8 * x - 2 * exp(-x)
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def SecantMethod(lower_bound, upper_bound, repeats):
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"""
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>>> SecantMethod(1, 3, 2)
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0.2139409276214589
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"""
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x0 = lower_bound
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x1 = upper_bound
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for i in range(0, repeats):
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x0, x1 = x1, x1 - (f(x1) * (x1 - x0)) / (f(x1) - f(x0))
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return x1
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print(f"The solution is: {SecantMethod(1, 3, 2)}")
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