Re: Re: Good idea to use ArcTan[x,y] in Solve, Integrate etc?
- To: mathgroup at smc.vnet.net
- Subject: [mg37366] Re: [mg37336] Re: Good idea to use ArcTan[x,y] in Solve, Integrate etc?
- From: David Terr <dterr at wolfram.com>
- Date: Fri, 25 Oct 2002 02:47:11 -0400 (EDT)
- Organization: WRI
- References: <firstname.lastname@example.org> <200210240655.CAA05054@smc.vnet.net>
- Sender: owner-wri-mathgroup at wolfram.com
Jens-Peer Kuska wrote:
> a potential division by 0 in ArcTan[y/x] ?
> Frank Iannarilli wrote:
> > Hi,
> > Is there any wisdom on whether one should employ or avoid the
> > 2-argument form of ArcTan, versus ArcTan[y/x], in expressions
> > involving Solve and Integrate?
> > Is there any harm? Is there any benefit?
> > Thanks!
The 2-argument form provides a bit more information since it takes the
signs of x and y into account and allows x to be zero. I imagine this
could be helpful when used with Solve, but I don't know about Integrate.
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