Re: Simple indefinite integral disagrees with table
- To: mathgroup at smc.vnet.net
- Subject: [mg28672] Re: Simple indefinite integral disagrees with table
- From: "Paul Lutus" <nospam at nosite.com>
- Date: Tue, 8 May 2001 02:51:10 -0400 (EDT)
- References: <9ctb6k$m4h@smc.vnet.net> <7%4J6.9909$I11.47858@ralph.vnet.net>
- Sender: owner-wri-mathgroup at wolfram.com
"Planet Internet Nieuws" <A.BinTalal at its.tudelft.nl> wrote in message news:7%4J6.9909$I11.47858 at ralph.vnet.net... > try the following : > > (1/3) aa Cos xx^3==(1/aa^2) Cos (aa xx) + (xx/aa) Sin (aa xx)//Equal > > the answer will be True, Mathematica just choose a solution with less terms No, as a matter of fact, the original poster wanted trigonometric functions, which your solution doesn't include. The actual Mathematica syntax must be: Integrate[x Cos[a x], x] With the result: Cos[a x] / a^2 + x Sin[a x] / a -- Paul Lutus www.arachnoid.com