FilesExpand file tree

master

/

secant_method.py

Copy path

Blame

More file actions

Blame

More file actions

Latest commit

 

History

History

History

29 lines (23 loc) · 577 Bytes

master

/

secant_method.py

Copy path

Top

File metadata and controls

• Code
• Blame

29 lines (23 loc) · 577 Bytes

Raw

Copy raw file

Download raw file

Open symbols panel

Edit and raw actions

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

"""

Implementing Secant method in Python

Author: dimgrichr

"""

from math import exp

def f(x: float) -> float:

"""

>>> f(5)

39.98652410600183

"""

return 8 * x - 2 * exp(-x)

def secant_method(lower_bound: float, upper_bound: float, repeats: int) -> float:

"""

>>> secant_method(1, 3, 2)

0.2139409276214589

"""

x0 = lower_bound

x1 = upper_bound

for _ in range(0, repeats):

x0, x1 = x1, x1 - (f(x1) * (x1 - x0)) / (f(x1) - f(x0))

return x1

if __name__ == "__main__":

print(f"Example: {secant_method(1, 3, 2)}")