Integrating and substituting
2 Ansichten (letzte 30 Tage)
Ältere Kommentare anzeigen
So I have a long code and now I want to differentiate a formula, y, with respect to x in and integral 0 to t. However, I want to keep the previous x for more calculation and substitute my x. Howe do I do this? Example:
x=5;
syms x
int(y,x,0,t)
I'm convinced I keep to substitue, using sub(), but I am unsure how tis would work out because x is now a plain variable (from syms). Any ideas?
0 Kommentare
Akzeptierte Antwort
Walter Roberson
am 21 Jun. 2012
Write y in terms of a different symbol, such as X, and
subs(y, X, sym('x'))
to get y in terms of the symbol x (distinct from your variable "x")
Or is y a string instead of a symbolic expression? If it is, then you should be able to do
int(y, 'x', 0, t)
Weitere Antworten (0)
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!