Why it doesn't work? (the solution of the transcendental equations by various methods)

Question

import math
def f(x):
fun = 4 * math.cos(x) + 0.3 * x
return fun

#a, b, h = [float(i) for i in input().split()]
a = float (input())
b = float (input())
h = float (input())
e = 0.0000001
while a < b:
z = a + h
if f(a) * f(z) < 0:
z_0 = z
a_0 = a
while z_0 - a_0 > e:
x_0 = (a_0 + z_0) / 2
if f(a_0) * f(z_0):
z_0 = x_0
else:
a_0 = x_0
print(x_0)

Answer 1

"while a<b:"

a always remains less than b. So we get an infinite loop. Initiate z with a, and set the condition as "while z < b:". Increment z by h inside the loop.

Also, I think the second if condition should be
if f(a_0) * f(x_0) < 0:

That should fix things. Let me know. 😊