What I am using right now dear Riccardo is the following:
Suppose that my variable sigma(define as a symbol) depends of u, but at the
same time this u is vectorial variable, which means for example in 3D the
variable will be : u = [u_0, u_1, u_2], all the components of u are defined
as symbols. Now I only need to do the following:
In: sigma(*u) #so sigma depends of u_0, u_1, u_2, and if we use diff:
In: diff(sigma, u_1)
Out: Derivative(sigma(u_0,u_1,u_2), u_1)
You received this message because you are subscribed to the Google Groups
To unsubscribe from this group and stop receiving emails from it, send an email
To post to this group, send email to email@example.com.
Visit this group at https://groups.google.com/group/sympy.
To view this discussion on the web visit
For more options, visit https://groups.google.com/d/optout.