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

DotNumerics.ode.test2.sm (21 КиБ) скачан 217 раз(а).
DotNumerics.ode.test2.pdf (79 КиБ) скачан 200 раз(а).

DotNumerics.ode.test2.sm (21 КиБ) скачан 217 раз(а).
DotNumerics.ode.test2.pdf (79 КиБ) скачан 200 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 КиБ) скачан 215 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 КиБ) скачан 256 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 КиБ) скачан 256 раз(а).

Martin Kraska
Pre-configured portable distribution of SMath Studio: https://en.smath.info/wiki/SMath%20with%20Plugins.ashx
2 пользователям понравился этот пост
Updated for SS 0.99.6824. Intervals issue fixed.
Russia ☭ forever, Viacheslav N. Mezentsev
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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 КиБ) скачан 294 раз(а).
dn.ode.kinetic2.sm (12 КиБ) скачан 258 раз(а).
dn.ode.kinetic3.sm (12 КиБ) скачан 257 раз(а).
dn.ode.test1.sm (19 КиБ) скачан 268 раз(а).
dn.ode.test2.sm (18 КиБ) скачан 263 раз(а).
dn.ode.Amplitude detector.sm (20 КиБ) скачан 277 раз(а).
dn.ode.kinetic1.pdf (77 КиБ) скачан 273 раз(а).
dn.ode.kinetic2.pdf (93 КиБ) скачан 262 раз(а).
dn.ode.kinetic3.pdf (91 КиБ) скачан 242 раз(а).
dn.ode.test1.pdf (115 КиБ) скачан 250 раз(а).
dn.ode.test2.pdf (120 КиБ) скачан 241 раз(а).
dn.ode.Amplitude detector.pdf (148 КиБ) скачан 250 раз(а).






dn.ode.kinetic1.sm (8 КиБ) скачан 294 раз(а).
dn.ode.kinetic2.sm (12 КиБ) скачан 258 раз(а).
dn.ode.kinetic3.sm (12 КиБ) скачан 257 раз(а).
dn.ode.test1.sm (19 КиБ) скачан 268 раз(а).
dn.ode.test2.sm (18 КиБ) скачан 263 раз(а).
dn.ode.Amplitude detector.sm (20 КиБ) скачан 277 раз(а).
dn.ode.kinetic1.pdf (77 КиБ) скачан 273 раз(а).
dn.ode.kinetic2.pdf (93 КиБ) скачан 262 раз(а).
dn.ode.kinetic3.pdf (91 КиБ) скачан 242 раз(а).
dn.ode.test1.pdf (115 КиБ) скачан 250 раз(а).
dn.ode.test2.pdf (120 КиБ) скачан 241 раз(а).
dn.ode.Amplitude detector.pdf (148 КиБ) скачан 250 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 КиБ) скачан 192 раз(а).
Best regards.
Alvaro.
dn_ExplicitRK45 issue.sm (8 КиБ) скачан 192 раз(а).
Best regards.
Alvaro.
1 пользователям понравился этот пост
Вячеслав Мезенцев 22.08.2022 03:11:00
2 пользователям понравился этот пост
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