RE: Simple indefinite integral disagrees with table

*To*: mathgroup at smc.vnet.net*Subject*: [mg28657] RE: [mg28647] Simple indefinite integral disagrees with table*From*: "Higinio Ramos" <higra at gugu.usal.es>*Date*: Sat, 5 May 2001 04:00:42 -0400 (EDT)*References*: <200105040423.AAA22633@smc.vnet.net>*Sender*: owner-wri-mathgroup at wolfram.com

----- Original Message ----- From: Mitch Berkson <berkson at home.com> To: mathgroup at smc.vnet.net Subject: [mg28657] [mg28647] Simple indefinite integral disagrees with table > 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 > You must put Cos[aa xx] instead of Cos( aa xx) etc.,etc. In[77]:= Integrate[xx Cos [aa xx], xx] Out[77]= \!\(Cos[aa\ xx]\/aa\^2 + \(xx\ Sin[aa\ xx]\)\/aa\)

**References**:**Simple indefinite integral disagrees with table***From:*"Mitch Berkson" <berkson@home.com>