This is apparently a very easy question, but I am new to the mathematics
computing environment and it will take me some time to become familiar
with Sage. The question is the following; Are these two expressions
similar?
sage: a,b,c = var('a,b,c')
sage: var('a,b,c')
If not, when should I use one or another?
In the documentation regarding the substitute method and when I checked the
examples I noticed that they show:
sage: x,y,t = var('x,y,t')
I guess this is not necessary because Sage considers by default x as a
symbolic variable, isn't it?
Thanks in advance.
Jose.
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