ODE2 - Not a proper differential equation?

#1 Pubblicato: 07/10/2024 15:12:57

Cornel

2 apprezzamenti in 78 post.

Gruppo: User

Hi,

Why is saying that its not a proper differential equation?

#2 Pubblicato: 07/10/2024 17:20:54

StvMath

44 apprezzamenti e 1 disapprezzamenti in 76 post.

Gruppo: User

Wrote
Hi,

Why is saying that its not a proper differential equation?

#3 Pubblicato: 07/10/2024 17:56:58

Cornel

2 apprezzamenti in 78 post.

Gruppo: User

And then if someone wants to solve a > 2 order differential equation (3th order, 4th order, etc), how to do it? What algorithm, command should I use/rely in SMath Studio?

#4 Pubblicato: 07/10/2024 18:18:13

Вячеслав Мезенцев

1.558 apprezzamenti in 1.868 post.

Gruppo: Moderator

Russia ☭ forever, Viacheslav N. Mezentsev

#5 Pubblicato: 07/10/2024 18:57:17

Cornel

2 apprezzamenti in 78 post.

Gruppo: User

And there are also some approach using maxima engine/command?

#6 Pubblicato: 08/10/2024 15:11:16

Martin Kraska

1.361 apprezzamenti in 2.275 post.

Gruppo: Moderator

Wrote
And there are also some approach using maxima engine/command?

Sure. Here is one using Maxima's desolve function and one using ODE.2 (without solving for the integration constants)

RLC.sm (23,17 KiB) scaricato 1673 volta(e).

Feder-Masse.sm (23,13 KiB) scaricato 1686 volta(e).

Technische Mechanik mit SMath Studio: https://link.springer.com/book/10.1007/978-3-658-50592-9

#7 Pubblicato: 09/10/2024 14:42:41

Cornel

2 apprezzamenti in 78 post.

Gruppo: User

Martin, do you have an example for a third order differential equation on how to solve it? because ode2 is limited to second order differentia eq as far as I understood. And my previous question was on how to sollve a differential eq of order > 2 (3, 4, etc)?

#8 Pubblicato: 09/10/2024 18:47:10

Martin Kraska

1.361 apprezzamenti in 2.275 post.

Gruppo: Moderator

Here I cirumvent the limitations of the translation using multiple intervals of integration. Example from the interactive handbook.

Worksheet36.sm (40,73 KiB) scaricato 2380 volta(e).

Technische Mechanik mit SMath Studio: https://link.springer.com/book/10.1007/978-3-658-50592-9

Forum SMath

ODE2 - Not a proper differential equation? - Messaggi