clear;clc
x=rand(1,5)%èªå·±æ¹
y=rand(1,5)%èªå·±æ¹
z=3*x+7*y+rand(1,5)%èªå·±æ¹
P=z/[x;y];%æå°äºä¹æ³
fprintf(1,'a=%f\nb=%f\n',P)
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[X,Y]=meshgrid(linspace(0,1));
surf(X,Y,P(1)*X+P(2)*Y);
shading interp;
alpha .5
title(sprintf('%fX%+fY=Z',P))
hold on
plot3(x,y,z,'o')
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