清空筛选条件
清空筛选条件

diff function for "Differentiate symbolic expression or function" vs "Differences and Approximate Derivatives"

1 次查看（过去 30 天）
Sarah Weatherly
Sarah Weatherly 2018-5-26
回答： Ameer Hamza 2018-5-26
I am trying to use diff as the first option but it keeps doing the second. How can I make it differentiate instead of doing the differences one? They both have the same function caller.

请先登录，再回答此问题。

回答（1 个）

Ameer Hamza
Ameer Hamza 2018-5-26
If the input is a symbolic expression, it will differentiate it. If the input is a numeric matrix, it will calculate the difference. For example,
syms x
d = diff(sin(x))
d =
cos(x)
also
diff([1 2 3])
ans =
1 1
So it depends on the input type, that how the diff() function will behave.

类别

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

标签

Community Treasure Hunt

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

Start Hunting!

Translated by