DotNumerics - Initial-value problem for nonstiff and stiff ordinary differential equations ODEs - Сообщения
Simple test 2.

DotNumerics.ode.test2.sm (21,23 КиБ) скачан 956 раз(а).
DotNumerics.ode.test2.pdf (79,99 КиБ) скачан 466 раз(а).

DotNumerics.ode.test2.sm (21,23 КиБ) скачан 956 раз(а).
DotNumerics.ode.test2.pdf (79,99 КиБ) скачан 466 раз(а).
Russia ☭ forever, Viacheslav N. Mezentsev
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WroteSimple test 2.
Works nice conventional/visual [6179].
That document, if it would come from other designer
would pass my QA [Quality Assurance].
Jean
DotNumerics.ode.test2.sm (24,51 КиБ) скачан 998 раз(а).
It seems that all the dotnumeric ode solver functions fail to add the last step to the solution. In the given example, the exact solution is (approximately) met if the end value of x is increased by one step (x_end/steps).
The sheet is easily extended to whatever ode solvers by adding their name to the search list. The actually available solvers depend on what plugins are installed.
Section Math ODE precision.sm (23,66 КиБ) скачан 1018 раз(а).

The sheet is easily extended to whatever ode solvers by adding their name to the search list. The actually available solvers depend on what plugins are installed.
Section Math ODE precision.sm (23,66 КиБ) скачан 1018 раз(а).

Martin KraskaPre-configured portable distribution of SMath Studio: https://en.smath.info/wiki/SMath%20with%20Plugins.ashx
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Updated for SS 0.99.6824. Intervals issue fixed.
Russia ☭ forever, Viacheslav N. Mezentsev
3 пользователям понравился этот пост
Updated.
Changes:
- zero point issue fixed;
- added support for the simple D(t,x) definition.
Changes:
- zero point issue fixed;
- added support for the simple D(t,x) definition.
Russia ☭ forever, Viacheslav N. Mezentsev
Updated.

dn.ode.kinetic1.sm (8,26 КиБ) скачан 1099 раз(а).
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dn.ode.Amplitude detector.sm (20,17 КиБ) скачан 1053 раз(а).
dn.ode.kinetic1.pdf (77,42 КиБ) скачан 557 раз(а).
dn.ode.kinetic2.pdf (93,05 КиБ) скачан 546 раз(а).
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dn.ode.test1.pdf (115,72 КиБ) скачан 539 раз(а).
dn.ode.test2.pdf (120,44 КиБ) скачан 528 раз(а).
dn.ode.Amplitude detector.pdf (148,87 КиБ) скачан 529 раз(а).

dn.ode.kinetic1.sm (8,26 КиБ) скачан 1099 раз(а).
dn.ode.kinetic2.sm (12,59 КиБ) скачан 1042 раз(а).
dn.ode.kinetic3.sm (12,28 КиБ) скачан 1041 раз(а).
dn.ode.test1.sm (19,58 КиБ) скачан 1045 раз(а).
dn.ode.test2.sm (18,88 КиБ) скачан 1059 раз(а).
dn.ode.Amplitude detector.sm (20,17 КиБ) скачан 1053 раз(а).
dn.ode.kinetic1.pdf (77,42 КиБ) скачан 557 раз(а).
dn.ode.kinetic2.pdf (93,05 КиБ) скачан 546 раз(а).
dn.ode.kinetic3.pdf (91,31 КиБ) скачан 531 раз(а).
dn.ode.test1.pdf (115,72 КиБ) скачан 539 раз(а).
dn.ode.test2.pdf (120,44 КиБ) скачан 528 раз(а).
dn.ode.Amplitude detector.pdf (148,87 КиБ) скачан 529 раз(а).
Russia ☭ forever, Viacheslav N. Mezentsev
4 пользователям понравился этот пост
NDTM Amarasekera 24.12.2018 09:44:00, sergio 24.12.2018 11:04:00, frapuano 24.12.2018 14:23:00, Radovan Omorjan 24.12.2018 14:52:00

Plugin updated.
Changes:
- solution restructured;
- converting the task for the ODE solver to the numerical form is now performed through the Mathcad Toolbox plugin (to avoid code duplication), so it must be installed;
- refactored.
Solvers that support mathematical notation now reuse code from the Mathcad Toolbox plugin. Now there is no need to recompile every such plugin.
Russia ☭ forever, Viacheslav N. Mezentsev
Hi Viacheslav. There are an issue with Implicit and dn_ExplicitRK45, just in the first element. Please see the attached.
dn_ExplicitRK45 issue.sm (8,42 КиБ) скачан 904 раз(а).
Best regards.
Alvaro.
dn_ExplicitRK45 issue.sm (8,42 КиБ) скачан 904 раз(а).
Best regards.
Alvaro.
1 пользователям понравился этот пост
Вячеслав Мезенцев 22.08.2022 03:11:00
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