04-38.txt

来自「MATLABR2006a基础教程」· 文本 代码 · 共 11 行

% fit sine between 0 and 2*pi using 3 order polyn0mial
x = 0:pi/10:2*pi;
y = sin(x);
p = polyfit(x,y,3);
plot(x,y,'r*');
hold on
f = poly2sym(p);
ezplot(f,[0,2*pi]);

>> p