Re: simplify Arg[E^(I x)]?

*To*: mathgroup at smc.vnet.net*Subject*: [mg125754] Re: simplify Arg[E^(I x)]?*From*: Bob Hanlon <hanlonr357 at gmail.com>*Date*: Sun, 1 Apr 2012 03:34:24 -0400 (EDT)*Delivered-to*: l-mathgroup@mail-archive0.wolfram.com*References*: <201203310842.DAA12986@smc.vnet.net>

Because it is only correct for a small domain Plot[Arg[E^(I x)], {x, -2 Pi, 2 Pi}] Arg[E^(I x)] /. {{x -> -Pi}, {x -> Pi}} {Pi, Pi} FullSimplify[Arg[E^(I x)], -Pi < x <= Pi] x Bob Hanlon On Sat, Mar 31, 2012 at 4:42 AM, Neal Becker <ndbecker2 at gmail.com> wrote: > Why doesn't this simplify? > > Fullsimplify[Arg[E^(I x)], x \[Element] Reals] > > I expect to get 'x'. > > Is there some way I can get this to simplify? > -- Bob Hanlon