Re: Plot[x Sin[x],{-100,100}] Bad {-100,99} Good?
- To: mathgroup at smc.vnet.net
- Subject: [mg38357] Re: Plot[x Sin[x],{-100,100}] Bad {-100,99} Good?
- From: spammahamma at yahoo.com (No spammage)
- Date: Thu, 12 Dec 2002 01:38:03 -0500 (EST)
- References: <at4d54$etu$1@smc.vnet.net>
- Sender: owner-wri-mathgroup at wolfram.com
"Steven T. Hatton" <hattons at globalsymmetry.com> wrote in message news:<at4d54$etu$1 at smc.vnet.net>...
> This is Mathematica 4.2 on Linux. I evaluated Plot[x Sin[x], {-100,100}] and
> disvovered that the portion of the plot between,9.5Pi and 11Pi is displayed
> as a line segment joining the points {9.5 , 9.5 Sin[9.5]} and {11 , 11
> Sin[11]}. I've also found that the plot from x=-100 to x=99.99 is incorrect.
> The plot over the range [-100,99] is correct. What is happening here? Does
> this happen on other systems?
I tried this in 4.0 and saw the same thing. If you add the directive
"PlotPoints->100", it fixes it.