Python解决题目

解题思路:judge判断det正负值，f负责分类计算和输出

注意事项:det是负数时，注意输出

参考代码:

def f(a,b,c):

    judge=b**2-4*a*c

    if judge>=0:

        x1=(-b+judge**0.5)/(2*a)

        x2=(-b-judge**0.5)/(2*a)

        print("x1=%.3f x2=%.3f"%(x1,x2))

    else:

        x_frontpart=(-b)/(2*a)

        x_laterpart=((-judge)**0.5)/(2*a)

        print("x1=%.3f+%.3fi x2=%.3f-%.3fi"%(x_frontpart,x_laterpart,x_frontpart,x_laterpart))

a_li=list(map(int,input().split()))

a,b,c=a_li[0:3]

f(a,b,c)