Re: Simplify[expr] bug?

*To*: mathgroup at smc.vnet.net*Subject*: [mg53412] Re: [mg53398] Simplify[expr] bug?*From*: Bob Hanlon <hanlonr at cox.net>*Date*: Tue, 11 Jan 2005 01:30:42 -0500 (EST)*Reply-to*: hanlonr at cox.net*Sender*: owner-wri-mathgroup at wolfram.com

All functions must be input with square brackets rather than parentheses. Such as Sin[a]. Sin(a) means a* Sin Bob Hanlon > > From: Ken Tozier <kentozier at comcast.net> To: mathgroup at smc.vnet.net > Date: 2005/01/09 Sun PM 11:04:00 EST > To: mathgroup at smc.vnet.net > Subject: [mg53412] [mg53398] Simplify[expr] bug? > > 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 > >