Timeline for Fast and reliable positive real root of cubic [closed]
Current License: CC BY-SA 3.0
8 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Mar 22, 2017 at 20:21 | history | closed |
Alexandre Eremenko Chris Godsil Neil Hoffman Jan-Christoph Schlage-Puchta Stefan Waldmann |
Not suitable for this site | |
| Mar 22, 2017 at 18:14 | answer | added | Federico Poloni | timeline score: 3 | |
| Mar 22, 2017 at 18:08 | comment | added | user68635 | Another approach that appears to be stable in the overall algorithm is to take the largest orthogonal projection of the roots to the positive real axis. But I don't know why this should be the correct root (it may depend on my specific numbers a, b, c, and d). | |
| Mar 22, 2017 at 17:55 | comment | added | user68635 | Selecting the correct solution: any naive selection rules are not stable themselves (because of the inaccuracy of the calculations). | |
| Mar 22, 2017 at 17:53 | review | Close votes | |||
| Mar 22, 2017 at 20:21 | |||||
| Mar 22, 2017 at 17:50 | comment | added | Federico Poloni | What's the problem: numerical stability, or selecting the correct solution among the three? | |
| Mar 22, 2017 at 16:59 | review | First posts | |||
| Mar 22, 2017 at 16:59 | |||||
| Mar 22, 2017 at 16:56 | history | asked | user68635 | CC BY-SA 3.0 |