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Integral problem

  • To: mathgroup at smc.vnet.net
  • Subject: [mg27874] Integral problem
  • From: Jose Lasso <jml at accessinter.net>
  • Date: Thu, 22 Mar 2001 04:30:13 -0500 (EST)
  • Sender: owner-wri-mathgroup at wolfram.com

Hello,

Well in my calculus class, I need to integrate the following expression:
(x^3/(x^4+x^2+1))dx, I solve the integral with Mathematica, but a few 
classmates got a different answer using other symbolic algebra 
system, the answers are totally different, the answer that my 
classmates got is:
1/4 Ln(x^4+x^2+1)-(Sqrt(3)/6) ArcTg((2x^2+1)/Sqrt(3)) is this the 
correct answer?? Thx in advance. Regards

Jose M Lasso


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