Re: Integral problem

*To*: mathgroup at smc.vnet.net*Subject*: [mg65664] Re: Integral problem*From*: dh <dh at metrohm.ch>*Date*: Wed, 12 Apr 2006 06:00:23 -0400 (EDT)*References*: <e1fq2r$bmo$1@smc.vnet.net>*Sender*: owner-wri-mathgroup at wolfram.com

Hi Ivan, Both are correct, amazing, but easy. Remember that an indefinite is determined up to a constant. Now, the only difering term is: Log[2-x^4] and Log[x^4-2] this can be written as: Log[-1(2-x^4)] == Log[-1] + Log[2-x^4] and you see that they differ only by a constant. Daniel ivan.svaljek at gmail.com wrote: > I've tried running an integral expression through mathematica 5.0 and > came up with this: > > http://aspspider.net/isvaljek/mathematica/index.html > > First two are from mathematica, and the last one is from a site running > web mathematica. >