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Use Python to write a function that finds the solution to a quadratic equation in real numbers

高洛峰Original: 2017-03-27 15:09:322161browse

def quar(a,b,c):
    if not isinstance(a,(int,float))|isinstance(b,(int,float))|isinstance(c,(int,float)):
        raise TypeError(&#39;Wrong Type inputing!&#39;)
    else:
        from math import sqrt
        tmp1=b**2-4*a*c
        if tmp1>0:
             return &#39;%.04f&#39;%float((-b+sqrt(tmp1))/(2*a)),&#39;%.04f&#39;%((-b-sqrt(tmp1))/(2*a))
        elif tmp1==0:
            return -b/(2*a)
        else:
            return &#39;No rational answer!&#39;

使用Python写一个求实数内二次方程解的函数

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