1lab

import math
import matplotlib.pyplot as plt


def function(x):
    return 0.93*x**5 - 0.71*x**4 - 0.53*x**3 + 2.1*x**2 - 10.5


def dihotom(a, b, count):
    c = (a + b)/2
    if count == 0:
        return c
    else:
        if function(a)*function(c) < 0:
            return dihotom(a, c, count - 1)
        if function(a)*function(c) > 0:
            return dihotom(c, b, count - 1)


a = 0
b = 10
n = 10
key = 1
while key:
    marker = function(a) * function(b)
    if marker > 0:
        print("May be you haven't root")
        print("Do you want change a and b? ")
        input(a)
        input(b)
    marker = function(a) * function(b)
    if marker < 0:
            key = 0
c = dihotom(a, b, n)
print('root = ', c)
print('function(root) = ', function(c))