how I can replace diff(x(t), t) with xdot ?

12 次查看（过去 30 天）
Ahmed Eltayeb
Ahmed Eltayeb 2012-9-29
>> syms t;
>> x=sym('x(t)');
>> f=sin(x);
>> diff(f,t)
ans =
cos(x(t))*diff(x(t), t)

请先登录，再回答此问题。

回答（1 个）

Oleg Komarov
Oleg Komarov 2012-9-29
syms t xdot;
x = sym('x(t)');
f = sin(x);
df = diff(f,t);
subs(df,'diff(x(t), t)',xdot)

类别

在 Help Center 和 File Exchange 中查找有关 Calculus 的更多信息

标签

产品

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by