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Re: Mathematica not considering an assumption

  • To: mathgroup at smc.vnet.net
  • Subject: [mg82686] Re: Mathematica not considering an assumption
  • From: markmgg at googlemail.com
  • Date: Sun, 28 Oct 2007 04:06:24 -0500 (EST)
  • References: <ffv36o$bf0$1@smc.vnet.net>

Hello Leonardo,

You can try on of the following:

a = -1; Assuming[a < 0, Integrate[x^a, {x, 5, 6}]]

or

Assuming[a == -1, Integrate[x^a, {x, 5, 6}]]

and you should have the integration result you are looking for
(Log[6/5]).

I have tried both of them and got the same result (Log[6/5]).



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