import math

def quadratic_equation(a, b, c):

? ? t = math.sqrt(b * b - 4 * a *c)

? ? x1 = (-b + t)/2 * a

? ? x2 = (-b - t)/2 * a

? ? return x1, x2

print quadratic_equation(2, 3, 0)

print quadratic_equation(1, -6, 5)

我代碼原來寫是這樣,結果不是理想中那樣,后來改成

import math

def quadratic_equation(a, b, c):

? ? t = math.sqrt(b * b - 4 * a *c)

? ? x1 = (-b + t)/(2 * a)

? ? x2 = (-b - t)/(2 * a)?

? ? return x1, x2

print quadratic_equation(2, 3, 0)

print quadratic_equation(1, -6, 5)

就對了,就是把 2 * a 改成 (2 * a),為什么呢,運算的順序不是一樣的嗎