xch12.m

数学建模与数学实验（第3版）课件+matlab

x=linspace(-6,6,100);
y=1./(x.^2+1);
x1=linspace(-6,6,11);
y1=1./(x1.^2+1);
plot(x,y,x1,y1,x1,y1,'o','LineWidth',1.5),
gtext('n=10'),