Hello, expand (cos (x+y)) is right. but how can I do expand (cos (2*x)) in cos(x)^2 - sin(x)^2 by example.
And how can I get the source file of this expand ? Thanks a lot. Fran�ois _______________________________________________ Axiom-math mailing list [email protected] http://lists.nongnu.org/mailman/listinfo/axiom-math
