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MathGroup Archive 2004

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Fundamental theorem problem

  • To: mathgroup at
  • Subject: [mg49573] Fundamental theorem problem
  • From: "Steven Jonak" <jonakst at>
  • Date: Fri, 23 Jul 2004 06:01:42 -0400 (EDT)
  • Sender: owner-wri-mathgroup at

I input the command: D[Integrate[Sec[t],{t,1,x^4}],x] expecting to get
4x^3 Sec[x^4] but instead got a fairly complicated result that doesn't
resemble what one would expect from the Fundamental Theorem of Calculus.
 What am I doing wrong? Help!

S Jonak
"Maintain an even strain."

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