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zuoye

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伏瑞斯

#1 Created at ... [Delete] [Delete and Lock User]

import math;

num_a = int(input('请输入常数a:'));

num_b = int(input('请输入常数b:'));

num_c = int(input('请输入常数c:'));

def quadratic(a, b, c):

     m = b*b-4*a*c

     if m >=0:

         x1=(-b+math.sqrt(m))/(2*a)

         x2=(-b-math.sqrt(m))/(2*a)

         return x1,x2

     else:

         return "无解"

# 测试:

print('quadratic(2, 3, 1) =', quadratic(2, 3, 1))

print('quadratic(1, 3, -4) =', quadratic(1, 3, -4))

if quadratic(2, 3, 1) != (-0.5, -1.0):

    print('测试失败')

elif quadratic(1, 3, -4) != (1.0, -4.0):

    print('测试失败')

else:

    print('测试成功')


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