Re: Integrate problem?
- To: mathgroup at smc.vnet.net
- Subject: [mg62128] Re: [mg62090] Integrate problem?
- From: Bob Hanlon <hanlonr at cox.net>
- Date: Sat, 12 Nov 2005 03:31:34 -0500 (EST)
- Reply-to: hanlonr at cox.net
- Sender: owner-wri-mathgroup at wolfram.com
Presumably your p is Pi
$Version
5.2 for Mac OS X (June 20, 2005)
Integrate[Sin[t]Sign[Sin[.999t]],{t,0,2Pi}]
3.999990110634892
Integrate[Sin[t]Sign[Sin[999t/1000]],{t,0,2Pi}]
-2*(-1 + Cos[(1000*Pi)/999])
%//N
3.999990110634892
NIntegrate[Sin[t]Sign[Sin[.999t]],{t,0,2Pi}]
3.999990110634892
Bob Hanlon
>
> From: "Martin Manscher" <mm01 at danfoss.com>
To: mathgroup at smc.vnet.net
> Date: 2005/11/11 Fri AM 02:51:53 EST
> Subject: [mg62128] [mg62090] Integrate problem?
>
> In[48]:=
> Integrate[Sin[t]Sign[Sin[.999t]],{t,0,2p}]
>
> Out[48]=
> 2. - 1.91585*10^-14 I
>
> In[49]:=
> NIntegrate[Sin[t]Sign[Sin[.999t]],{t,0,2p}]
>
> Out[49]=
> 4.
>
> Why?
> /Martin
>
>