ex_4.m

MATLAB仿真设计与实验

function rt=rt_quad(coef)
a=coef(1); b=coef(2); c=coef(3);
int=b^2-4*a*c;
if int>0
srint=sqrt(int);
x1=(-b+srint)/(2*a);
x2=(-b-srint)/(2*a);
elseif int == 0
x1= -b/(2*a);
x2= x1;
elseif int <0
srint=sqrt(-int);
p1=-b/(2*a);
p2=srint/(2*a);
x1=p1+p2*j;
x2=p1-p2*j;
end