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MathGroup Archive 2004

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Re: Forcing functions

  • To: mathgroup at smc.vnet.net
  • Subject: [mg51034] Re: Forcing functions
  • From: Helen Read <read at math.uvm.edu>
  • Date: Sat, 2 Oct 2004 03:18:10 -0400 (EDT)
  • Organization: EM Computer Facility, The University of Vermont
  • References: <200302110942.EAA26084@smc.vnet.net> <b2d1cl$eaa$1@smc.vnet.net> <cjj7b4$bo4$1@smc.vnet.net>
  • Sender: owner-wri-mathgroup at wolfram.com

Barry Tesman wrote:

> Can you "force" Mathematica to not use certain functions?  E.g., I
> want to give my students some problems to antidifferentiate.  One
> such problem is:
> 
> Integrate[ x * Sqrt[x^2 + 2x +4], x]
> 
> The answer uses arcsinh.  Can one force Mathematica to use natural
> log instead?

TrigToExp[Integrate[x*Sqrt[x^2 + 2x + 4], x]]

--
Helen Read
University of Vermont


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