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Re: A Problem with Simplify

  • To: mathgroup at smc.vnet.net
  • Subject: [mg87603] Re: A Problem with Simplify
  • From: Alexey Popkov <popkov at gmail.com>
  • Date: Mon, 14 Apr 2008 05:43:40 -0400 (EDT)
  • References: <ftkb7f$a9m$1@smc.vnet.net>
On Apr 10, 10:14 am, "Kevin J. McCann" <Kevin.McC... at umbc.edu> wrote:
> I have the following rather simple integral of two sines, which should
> evaluate to zero if m is not equal to n and to L/2 if they are the same.

Try the following:
Integrate[Exp[(a - 1)*x], x] /. a -> 1
Integrate[Cos[(a - 1)*x], x] /. a -> 1
Integrate[(a - 1)^x, {x, -1, 0}] /. a -> 1
Integrate[Cos[a x]/Sin[x], x] /. a -> 1

There is the ONE underlying BUG! In some complicated cases this bug
may result in random partial answers.

http://forum.ru-board.com/topic.cgi?forum=5&topic=10291&start=80#9
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