Re: Fundamental theorem problem
- To: mathgroup at smc.vnet.net
- Subject: [mg49600] Re: Fundamental theorem problem
- From: "Steve Luttrell" <steve_usenet at _removemefirst_luttrell.org.uk>
- Date: Sat, 24 Jul 2004 03:47:33 -0400 (EDT)
- References: <cdqqnb$km6$1@smc.vnet.net>
- Sender: owner-wri-mathgroup at wolfram.com
This does what you want:
FullSimplify[Assuming[2*x^4 <= Pi, D[Integrate[Sec[t], {t, 1, x^4}], x]]]
Steve Luttrell
"Steven Jonak" <jonakst at gw.kirkwood.k12.mo.us> wrote in message
news:cdqqnb$km6$1 at smc.vnet.net...
> 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."
>