MapAt complaint
- To: mathgroup at yoda.physics.unc.edu
- Subject: MapAt complaint
- From: Richard Mercer <richard at rmercer.wright.edu>
- Date: Tue, 09 Nov 1993 08:46:06 -0500
Martin McClain writes: > I want to go from expr1 = 1+Sin[a+b]+Sin[a-b] > > to expr2 = 1 + 2 Cos[a] Sin[b]. > I am looking for an easy one liner. Any suggestions? This can be done with Apart[expr1,Trig->True]. However I agree that dealing with trig manipulations is much more difficult in Mma than it needs to be; almost a Black Art. Maybe someday I'll do something about that. ********************************************************************* Richard Mercer 513-873-2191 office Department of Mathematics and Statistics 513-873-2785 message Wright State University 513-873-3301 fax Dayton, OH 45435 NeXTmail welcome! richard at rmercer.wright.edu or rmercer at desire.wright.edu *********************************************************************