Simplify results
- To: mathgroup at smc.vnet.net
- Subject: [mg118264] Simplify results
- From: "Berthold Hamburger" <b-hamburger at artinso.com>
- Date: Tue, 19 Apr 2011 06:56:29 -0400 (EDT)
Hi, This might be a silly question, so please bear with me, but I have been scratching my head about it for some time now. Is there a particular reason why Mathematica (8.01) simplifies the following fraction reversing the signs in the result: IN: Simplify[(8a^2b^3(c^2+1)^4-6a^3b^2(c^2+1)^3+14a^4b (c^2+1)^2)/(4a^3b^2(c^2+1)^2-10a^4b^3(c^2+1)^3)] OUT: (-7 a^2+3 a b (1+c^2)-4 b^2 (1+c^2)^2)/(a b (-2+5 a b (1+c^2))) Reducing the fraction by hand gives me: (7 a^2-3 a b (1+c^2)+4 b^2 (1+c^2)^2)/(a b (2-5 a b (1+c^2))) Thanks Berthold -- Berthold Hamburger - Cellist/Spain Email: behambu at artinso.com http://www.artinso.com http://www.astronomy.artinso.com