matlab一元二次方程function [x,x1,x2]= cal_roots( a,b,c )%UNTITLED Summary of this function goes here% Detailed explanation goes hereif a==0error('a=0--Not a quadratic equation');elseif abs(b^2-4*a*c)> a=1;b=5;c=6;>> [x,x1,x2]=cal_roots(a,b,c)Er

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