Mathematica computes a different answer in version 7
- To: mathgroup at smc.vnet.net
- Subject: [mg94017] Mathematica computes a different answer in version 7
- From: Jack Dyson <jackdyson31 at libero.it>
- Date: Tue, 2 Dec 2008 00:41:21 -0500 (EST)
Hello again all, This is quite a serious difficulty because along with the mail about Fourier transforms this seems to be another area where Mathematica 7 is giving a different answer. I have been testing things all day and I have found that the integral agrees with Mathematica 6 when the limits are (0,Infinity) in both. This is unfortunate as we pay a lot for Mathematica and every new version seems to be acting up in some way - it wastes productive time... I hope its me who is making the mistake and not Mathematica 7. Cheers and I hope somebody might have a clue as to whats going on with this integral ... maybe Mathematica 7 uses a new integration path ? but still a negative gamma function in the answer does not allow the expression to evaluate without complex infinities ... so I have to use Mathematica 6 and Mathematica 5 to check things every time ! Jack