Differentiate function by a function
2 Ansichten (letzte 30 Tage)
Ältere Kommentare anzeigen
Hi
I'm just a little bit lost here. I'm using the latest MATLAB release with the symbolic maths toolbox. At the moment I'm working on a system, which has equations like x=theta(t)+2 (of course a lot more complicated and longer). Now I would like to differentiate this equation by theta(t). Hence, I should get x=1. However, if I use the diff(x,theta) command I only get the message Invalid variable.
How do I do it? What am I doing wrong?
Thanks!
0 Kommentare
Antworten (1)
Manali Gupta
am 21 Jun. 2019
Bearbeitet: Manali Gupta
am 21 Jun. 2019
Hi Moritz,
Here theta(t) is not a symbolic variable but a symbolic function. You can differentiate a symbolic expression only w.r.t to a symbolic variable and not a symbolic function. Please refer to the documentation for more details.
0 Kommentare
Siehe auch
Kategorien
Mehr zu Symbolic Math Toolbox finden Sie in Help Center und File Exchange
Produkte
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!