import math
from pathlib import _Accessor

min_precision = 0.000001

def my_function(x):
    return x*x*x*x+(7/2)*(x*x*x)-(29/2)*(x*x)-(55/2)*x+(75/2)

def go_deeper(x, intervalas, depth = 0):
    answer = my_function(x)
    if abs(answer) < min_precision:
        print("Gylis: ", depth)
        return x
    positive = is_positive(answer)
    if (bool(is_positive(my_function(x+(intervalas/2)))) ^ bool(positive)):
        return go_deeper(x,intervalas/2, depth+1)
    else:
        return go_deeper(x+intervalas/2, intervalas/2, depth+1)

def is_positive(n):
    if n > 0:
        return True
    else:
        return False


B = (55)/2
k = 4 - 2
R = 1 + pow(B/1,1/k)
print("B =", B, "k =", k, "Rteig =", R)

B=(29)/2
k = 4 - 3
Rneig = 1 + pow(B/1, 1/k)
print("B =", B, "k =", k, "Rneig =", Rneig)
print("Imame nuo",-R,",iki",R,". Nes R teig yra mažesnis")
intervalas =0.001
print("intervalas yra:", intervalas)
i = -R
positive = False
while i < R:
    answer = my_function(i)
    positive = is_positive(answer)
    i += intervalas


    # if abs(answer) < 0.1:
    #     print(answer, i)
    if (is_positive(my_function(i)) is not positive):
        answer = go_deeper(i-intervalas, intervalas)
        print("Ats: ", answer, " Value:", my_function(answer))