Integrate got slower in Version 3.0/Example
- To: mathgroup at smc.vnet.net
- Subject: [mg8945] Integrate got slower in Version 3.0/Example
- From: Elias Saab <mathes at math.missouri.edu>
- Date: Mon, 6 Oct 1997 01:59:15 -0400
- Sender: owner-wri-mathgroup at wolfram.com
In version 2.2
In[1]:= Integrate[Sqrt[R^2-x^2-y^2],{x,-R,R},
{y,-Sqrt[R^2-x^2],Sqrt[R^2-x^2]}]//Timing
3
2 Pi R
Out[1]= {5.17 Second, -------}
3
In Version 3.0
Integrate[Sqrt[R^2-x^2-y^2],{x,-R,R},
{y,-Sqrt[R^2-x^2],Sqrt[R^2-x^2]}]//Timing
Integrate::"gener": "Unable to check convergence"
3
2 Pi R
Out[1]= {32.8 Second, -------}
3
I mentionned this to Wolfram before the release of 3.0. It seems
that nothing has been done to correct this.
Elias Saab