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