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Re: Simple indefinite integral disagrees with table

  • To: mathgroup at smc.vnet.net
  • Subject: [mg28665] Re: [mg28647] Simple indefinite integral disagrees with table
  • From: Chris Johnson <cjohnson at shell.faradic.net>
  • Date: Sat, 5 May 2001 04:00:49 -0400 (EDT)
  • Sender: owner-wri-mathgroup at wolfram.com

Mitch,

Your syntax is wrong.  Try:
Integrate[xx Cos[aa xx], xx]

and it should get what you expect.  Note the use of brackets
vs. parentheses.

Chris


On Fri, 4 May 2001, Mitch Berkson wrote:

> The Mathematica solution to the indefinite integral below doesn't agree with
> that found in my CRC tables.
> 
> Integrate[xx Cos (aa xx), xx]
> = (1/3) aa Cos xx^3
> 
> The CRC table gives: (1/aa^2) Cos (aa xx) + (xx/aa) Sin (aa xx)
> 
> The Mathematica solution doesn't look right.  Thanks for any help.
> 
> Mitch Berkson
> 
> 



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