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MathGroup Archive 2004

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Re: definite and indefinite Integrate

  • To: mathgroup at smc.vnet.net
  • Subject: [mg50443] Re: [mg50428] definite and indefinite Integrate
  • From: Andrzej Kozlowski <akoz at mimuw.edu.pl>
  • Date: Sat, 4 Sep 2004 01:43:19 -0400 (EDT)
  • References: <200409030735.DAA15564@smc.vnet.net>
  • Sender: owner-wri-mathgroup at wolfram.com

*This message was transferred with a trial version of CommuniGate(tm) Pro*

On 3 Sep 2004, at 16:35, Jun Yan wrote:

> *This message was transferred with a trial version of CommuniGate(tm) 
> Pro*
> This is a question from a beginner:
>
> ff[z_] = 1/z + z^3
> Integrate[ff[z], {z, y, y0}]
> intff[z_] = Integrate[ff[z], z]
> intff[y] - intff[y0]
>
> I expected to get same results from line 2 and line 4. However, the 
> output
> from line 2 is very complicated, with an If which has Im(y) and Im(y0)
> involved. The result I want is that from line 4. How can I modify line 
> 2
> so that it produces the same output as from line 4?
>
> Thanks.
>
> Jun
>
>
Use

Integrate[ff[z], {z, y, y0}, GenerateConditions -> False]



Andrzej Kozlowski
Chiba, Japan
http://www.mimuw.edu.pl/~akoz/


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