Re: Integrating Abs[Sin[]^2]
- To: mathgroup at smc.vnet.net
- Subject: [mg38908] Re: Integrating Abs[Sin[]^2]
- From: Marian Otremba <marianUSUN at zeus.polsl.gliwice.pl>
- Date: Sat, 18 Jan 2003 00:38:38 -0500 (EST)
- References: <b032m9$mv4$1@smc.vnet.net> <b05r8a$2b6$1@smc.vnet.net> <b08ld1$7o5$1@smc.vnet.net>
- Sender: owner-wri-mathgroup at wolfram.com
"David W. Cantrell" wrote:
>
> > In[1]:= result = Integrate[ Abs[Sin[k x]]^2, {x,0,1},
> > Assumption->{Im[k]>0}] (* !! *)
> > N[ result /. k->I+1 ]
> > Out[2]:= 0.67391
>
> Strange. That doesn't work for me (using version 4.2 for Windows).
I'm sorry. Not 'Assumption' but 'Assumptions'
result = Integrate[ y, {x,0,1},Assumptions->{Im[k]>0}]
N[ result /. k->I+1
Out[2]=0.679391
This work using version 3.0 for Windows
--
marian otremba