📄 p05312.m
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clear;newplot;
axis([-10,18,-8,12]);
axis off;
text(-5,13,'空间直线的标准方程','Fontsize',20,'color','green');
hold on;
X=[0,15];
Y=[0,0];
fline(X,Y,'y');
X=[0,0];
Y=[0,10];
fline(X,Y,'y');
X=[0,-5];
Y=[0,-5];
fline(X,Y,'y');
text(0,-.6,'O');
text(15,-.6,'Y');text(.5,10,'Z');text(-4,-5,'X');
X=[-3,10];
Y=[4,7];
plot(X,Y,'r');
X=[1,8];
Y=[3,4.6];text(2,6,'M0');text(2,5.25,'。');
text(7,7,'M');text(7,6.35,'。');
fline(X,Y,'c');text(4,3,'s');text(3.8,3.2,'→');
hold off;
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