Timeline for A definite integral
Current License: CC BY-SA 3.0
10 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Sep 27, 2011 at 15:20 | comment | added | Anand | Thanks Jacques Carette. But does any one know a proof? I am still thinking of a proof of this integral. | |
| Sep 24, 2011 at 23:46 | comment | added | Jacques Carette | You need the assumptions, else it will return unevaluated. This is a common mistake made in using Maple, not using all the available information. It worked for me all the way back to Maple 11. | |
| Sep 24, 2011 at 20:34 | comment | added | Anand | @Jacques Carette, I just installed Maple and tried the above integral. It returns the same integral, i.e., it couldn't find an closed form solution in Maple. Maybe I need to explore Maple 15 more. Thanks. :-) | |
| Sep 24, 2011 at 18:22 | comment | added | Jacques Carette | @Anand: oops. @Brendan: thanks for noticing! | |
| Sep 24, 2011 at 13:29 | vote | accept | Anand | ||
| Sep 28, 2011 at 8:01 | |||||
| Sep 24, 2011 at 13:29 | comment | added | Anand | @Brendan, you are right, after changing $\Phi$ to erf function, numerical calculation suggests that it is the right answer. Thanks! :-) | |
| Sep 24, 2011 at 12:29 | comment | added | Brendan McKay | Probably that's because erf and $\Phi$ are not the same. erf is an integral from 0 to something not from $-\infty$ to something. | |
| Sep 24, 2011 at 12:12 | comment | added | Anand | Hello, Jacques Carette, I plot the ratio function between the numerical integral of my integral and your solution. But it doesn't give a constant 1 function. | |
| Sep 24, 2011 at 12:03 | comment | added | Anand | Thanks Jacques Carette. I only use Mathematica and Matlab. It seems to me that Mathematica is most powerful symbolic calculation engine. I will have a look of Maple. Thanks a lot! :-) | |
| Sep 24, 2011 at 11:54 | history | answered | Jacques Carette | CC BY-SA 3.0 |