ch408.m

来自「胡广书例题matlab源程序,每章节均有,比较精彩」· M 代码 · 共 5 行

syms t
x=t*(1-sin(t));
y=t*cos(t);
df1=diff(y,t)/diff(x,t)
df2=diff(df1,t)/diff(x,t)