RE: FullSimplify failure
- To: mathgroup at smc.vnet.net
- Subject: [mg38480] RE: [mg38476] FullSimplify failure
- From: "Wolf, Hartmut" <Hartmut.Wolf at t-systems.com>
- Date: Fri, 20 Dec 2002 04:24:20 -0500 (EST)
- Sender: owner-wri-mathgroup at wolfram.com
>-----Original Message----- >From: carlos at colorado.edu [mailto:carlos at colorado.edu] To: mathgroup at smc.vnet.net >Sent: Wednesday, December 18, 2002 7:55 AM >To: mathgroup at smc.vnet.net >Subject: [mg38480] [mg38476] FullSimplify failure > > >Print[ FullSimplify[ArcCos[(Sqrt[3]-1)/(2*Sqrt[2])]]//InputForm]; >Print[ FullSimplify[ArcSin[(Sqrt[2]+Sqrt[6])/4]]//InputForm]; > >(5*Pi)/12 > >ArcSin[(Sqrt[2] + Sqrt[6])/4] > > >Both answers should be 5*Pi/12. This is fouling up a script. >Is there a way to get FullSimplify to do exactly that for >the ArcSin? > >Carlos Felippa > Carlos, possibly this might help you: In[27]:= argFac[f_[a_]] := f[Factor[a]] In[28]:= FullSimplify[ArcSin[(Sqrt[2] + Sqrt[6])/4], TransformationFunctions -> {Automatic, argFac}] Out[28]= (5*Pi)/12 -- Hartmut Wolf