Hi there!
In Mathematica you can do the following: Collect[expr, {var1, var2, var3}, Simplify]
This transforms
expr = var1expr11 + var2expr22 + var1var2expr12 + ...
to
var1Simplify[expr11] + var2Simplify[expr22] + var1var2Simplify[expr12] + ...
I was wondering if there is an easy way to do this in Sage.
So my questions are:
1) How can you collect multiple variables?
2) How can you manipulate their coefficients? (each coefficient is independent)
3*) How can you print the result in a pretty way? (e.g. collecting the expression by coefficients and printing each term in a new line)
Thanks for your help!
