I want to define a fonction of n parmeters who gives $a R/(a+b)p_x$.
If I construct the tuple of variable :
vard = var('a, b, p_x,p_y, R')
I was expecting that
Dx(*vard) = a R/(a+b)p_x
would be understud by Sagemath since *vard unpacks the tuple. But obviously it's not the case. Where am I wrong ?
