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Re: How to help Mathematica take an integral

  • To: mathgroup at smc.vnet.net
  • Subject: [mg81898] Re: [mg81866] How to help Mathematica take an integral
  • From: DrMajorBob <drmajorbob at bigfoot.com>
  • Date: Sat, 6 Oct 2007 04:37:16 -0400 (EDT)
  • References: <31175889.1191597581822.JavaMail.root@m35>
  • Reply-to: drmajorbob at bigfoot.com

indefinite[z_] =
  Integrate[Erf[Log[x]], {x, 1, z}, Assumptions -> {z > 1}]
indefinite'[z] // Simplify

\[ExponentialE]^(1/4) (-Erf[1/2] + Erf[1/2 - Log[z]]) + z Erf[Log[z]]

Erf[Log[z]]

Bobby

On Fri, 05 Oct 2007 03:52:17 -0500, Aaron Fude <aaronfude at gmail.com> wrote:

> Hi,
>
> I would like to evaluate the indefinite integral of Erf[Log[x]].
> Mathematica seems to be able to do any definite integral, but not the
> indefinite version. Is there anything I can do to help Mathematica
> along?
>
> Many thanks in advance,
>
> Aaron Fude
>
>
>



-- 

DrMajorBob at bigfoot.com


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