10 0 collect multiple variables and simplify their coefficients ( 2021-03-25 11:39:12 +0200 )
10 0 collect multiple variables and simplify their coefficients ( 2012-06-25 10:51:10 +0200 )
2 0 autodeclare variables ( 2012-06-25 10:29:38 +0200 )
10 0 collect multiple variables and simplify their coefficients ( 2011-10-17 15:02:15 +0200 )