Symbolic substitution for variable subscripts
4 visualizaciones (últimos 30 días)
Mostrar comentarios más antiguos
How should I perform the following substitution:
? Can the subs function be used? Or do I have to take a manual approach and use sprintf into a char representation of the expression before converting it to symbolic form?
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/237103/image.png)
1 comentario
Walter Roberson
el 5 de Sept. de 2019
Supposing your a is to be 17 x 3, then
a = sym('a', [17 3]);
and then for any given numeric subscript j, sum(a(j,:))
However it is not possible to create the sum when j is symbolic
Respuestas (0)
Ver también
Categorías
Más información sobre Symbolic Math Toolbox en Help Center y File Exchange.
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!