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@maskot1977(Ikemen Mas Kot)

プログラミング問題集解答例（問６）

Posted at

問６

def question6(f, a, b, e = 0.00001):
    if f(a) * f(b) >0:
        return False

    while abs(f(a) - f(b)) > e:
        c = (a + b) / 2
        if f(c) == 0:
            return c
        elif f(a) * f(c) >0:
            a = c 
        elif f(a) * f(c)<0:
            b = c

    return (a + b)/2

import math
def f(x):
    return math.exp(x)-3*x

question6(f,0,1)

0.6190605163574219

def g(x):
    return math.tanh(x) + x + 2

question6(g,0,1)

False

question6(g,-10,1)

-1.1743409633636475
0

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