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]).