Re: Simplify[expr] bug?

*To*: mathgroup at smc.vnet.net*Subject*: [mg53416] Re: Simplify[expr] bug?*From*: "Jens-Peer Kuska" <kuska at informatik.uni-leipzig.de>*Date*: Tue, 11 Jan 2005 01:30:49 -0500 (EST)*Organization*: Uni Leipzig*References*: <crsvl1$dsi$1@smc.vnet.net>*Sender*: owner-wri-mathgroup at wolfram.com

Hi, and why do you write Simplify[] with [] and Sin and Cos with round brackets ? Mathematica uses for *all* functions, i. e., also Sin[] and Cos[] square brackets, only if you are using the TraditionalForm[] input round brackets for function arguments are allowed. Regards Jens "Ken Tozier" <kentozier at comcast.net> schrieb im Newsbeitrag news:crsvl1$dsi$1 at smc.vnet.net... > 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 >