Timeline for NIntegrate failed to converge and why?
Current License: CC BY-SA 4.0
8 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Nov 6, 2019 at 14:52 | history | edited | Chris K | CC BY-SA 4.0 | added extra method |
| Nov 6, 2019 at 12:50 | comment | added | Michael E2 | @dcydhb I believe p1 is discontinuous when x'[t] == 0. Plot cannot figure that out on its own. Compare with Plot[p1, {t, 40, 44}, PlotRange -> All, Exclusions -> (x'[t] == 0 /. First@s1)]. | |
| Nov 6, 2019 at 10:19 | comment | added | dcydhb | you have solved my question and thanks a lot! | |
| Nov 6, 2019 at 10:18 | vote | accept | dcydhb | ||
| Nov 6, 2019 at 9:30 | comment | added | Chris K | NIntegrate::slwcon is a warning, not an error. If you get an answer without NIntegrate::ncvb it should be good. Sorry, I have no idea about your plot in Excel. | |
| Nov 6, 2019 at 9:21 | comment | added | dcydhb | and if the real solution of p1 is continous,will the figure of p1 is continous means the solution of p1 is continus? why when i export p1 data to EXCEL and plot in EXCEL,the figure is discontinous? | |
| Nov 6, 2019 at 9:18 | comment | added | dcydhb | yes,the real period is not 23.14,it doesn't matter this question,and NIntegrate::slwcon: Numerical integration converging too slowly; suspect one of the following: singularity, value of the integration is 0, highly oscillatory integrand, or WorkingPrecision too small. >> still exist,it means the result is not accurate or it only means the Convergence is slow ? | |
| Nov 6, 2019 at 9:13 | history | answered | Chris K | CC BY-SA 4.0 |