Re: real function argument
- To: mathgroup at smc.vnet.net
- Subject: [mg73419] Re: real function argument
- From: Jens-Peer Kuska <kuska at informatik.uni-leipzig.de>
- Date: Fri, 16 Feb 2007 00:54:54 -0500 (EST)
- Organization: Uni Leipzig
- References: <er1bq1$7ci$1@smc.vnet.net>
- Reply-to: kuska at informatik.uni-leipzig.de
Hi, f[x_] := Assuming[x =E2=88=88 Reals, Simplify[Re[Cos[x] + I Sin[x]]]] ?? Regards Jens bar at ANTYSPAM.ap.krakow.pl wrote: > Hi, > I have a problrm with defining real argument > > In: f[x_]:=Re[Cos[x]+I Sin[x]] > f'[x] > > Out: -Cos[x] Im'[x]-Sin[x]Re'[x] > > In: FullSimplify[f'[x],Element[x,Reals]] > gives the same out > > Any suggestions ? > > Regards, Olaf > >