Re: Integrate...
- To: mathgroup at smc.vnet.net
- Subject: [mg44374] Re: [mg44257] Integrate...
- From: Dr Bob <drbob at bigfoot.com>
- Date: Fri, 7 Nov 2003 05:16:17 -0500 (EST)
- Organization: Interstellar Corps of Engineers
- Reply-to: drbob at bigfoot.com
- Sender: owner-wri-mathgroup at wolfram.com
That's an appalling bug, of course. Always sanity-check your outputs in Mathematica! However, NIntegrate gets it right without eliminating the floating point 1's. NIntegrate[Abs[1.0*Cos[r]+1.0*Sin[r]],{r,2.35,2.36}] 0.0000373731 Bobby Integrate... Subject: [mg44374] [mg44257] Integrate... From: Sampo Smolander <sampo.smolander+news at helsinki.fi> To: mathgroup at smc.vnet.net Organization: University of Helsinki Does anybody know why Integrate[Abs[1.0*Cos[r] + 1.0*Sin[r]], {r, 2.35, 2.36}] gives -2.82839 whereas without those 1.0's, Integrate[Abs[Cos[r] + Sin[r]], {r, 2.35, 2.36}] gives the correct 0.000037373 ? (I'm running Mathematica 4.1 on win98.) -- Sampo Smolander ............... http://www.cs.helsinki.fi/u/ssmoland/ Rolf Nevanlinna Institute, University of Helsinki ...................