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Upload original Matlab程序设计 course files

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p1=[1,2 4.0.5];
p2=[1,2];
p3=[1,2,3];
p=p1+[0,conv(p2,p3)]
A = roots(p)
A=[-1 1.2 -1.4;0.75 2 3.5;0 5 2.5];
polyval (p,A)
polyvalm(p,A)