Simplify[expr] bug?

*To*: mathgroup at smc.vnet.net*Subject*: [mg53398] Simplify[expr] bug?*From*: Ken Tozier <kentozier at comcast.net>*Date*: Sun, 9 Jan 2005 23:04:00 -0500 (EST)*Sender*: owner-wri-mathgroup at wolfram.com

I'm a complete newbie to Mathematica and not a math whiz, but the results I got from the following two equations seems like bugs to me. Test 1: Running: Simplify[Sin(a) - Sin(b)] Yeilds: (a - b)Sin Looks like it's treating the function "Sin" like a coefficient Test 2: Running: Simplify[d/s + Cos(2*¹*v/s) - Cos(2*¹*(v - 1)/s)] Yeilds: (d + 2 Cos ¹) / s Mathematica completely factors out the variable "v" which is critical to the correct solution. Are these bugs or am I making an inadvertent syntax error. Thanks, Ken Tozier

**Follow-Ups**:**Re: Simplify[expr] bug?***From:*yehuda ben-shimol <benshimo@bgu.ac.il>

**Re: Simplify[expr] bug?***From:*Murray Eisenberg <murray@math.umass.edu>

**Re: Simplify[expr] bug?***From:*Andrzej Kozlowski <akoz@mimuw.edu.pl>