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作业

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# -*- coding: utf-8 -*-

import math

def quadratic(a, b, c):

# 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')

** Run:**

quadratic(2, 3, 1) = (-0.5, -1.0) 

quadratic(1, 3, -4) = (1.0, -4.0) 

测试成功


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