2018-09-16 17:34:33 +0200 received badge ● Notable Question (source) 2015-03-09 17:34:00 +0200 received badge ● Popular Question (source) 2012-11-26 15:52:21 +0200 answered a question Substituting numerical values without partial evaluation. Actually, I found sympy to do almost exactly what I want, with:  sympy.latex( e, mul_symbol='times', symbol_names=d )  where d is a dictionary of symbols -> numerical strings mappings. sympy might turn out to be just enough for my purposes, though I still would like to know if this is possible with a reasonable (i.e. small ;-)) amount of work in sage, just in case. Basically I have a small number (3-6) of mostly linear eqns to solve where the variables to solve for are not known ahead of time. I'm generating worked out examples of equilibrium eqns for students. 2012-11-26 14:31:56 +0200 asked a question Substituting numerical values without partial evaluation. Given an expression of the form:  var('x y') e = x*y + 1  I would like to be able to substitute numerical values into an expression without it being simplified. I'm not too concerned about seeing it in the notebook, but I would like the latex display to be affected. In other words, I would like the equivalent of:  latex(e(x=5,y=6)) => "5 \times 6 + 1"  Any hope of doing this? I could substitute into the text of the latex, but then I would get "5 6 + 1".