ODE2 - Not a proper differential equation?

ODE2 - Not a proper differential equation? - Mensajes

#1 Publicado: 7/10/2024 15:12:57
Cornel

Cornel

2 me gusta en 78 mensajes.

Grupo: User

Hi,

Why is saying that its not a proper differential equation?

1.png

2.png
#2 Publicado: 7/10/2024 17:20:54
StvMath

StvMath

44 me gusta y 1 no me gusta en 76 mensajes.

Grupo: User

Wrote

Hi,

Why is saying that its not a proper differential equation?

2.png




ODE2.png

#3 Publicado: 7/10/2024 17:56:58
Cornel

Cornel

2 me gusta en 78 mensajes.

Grupo: User

ODE2.png




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 Publicado: 7/10/2024 18:18:13
Вячеслав Мезенцев

Вячеслав Мезенцев

1.558 me gusta en 1.868 mensajes.

Grupo: Moderator

maple-dsolve-diffn.jpg
Russia ☭ forever, Viacheslav N. Mezentsev
#5 Publicado: 7/10/2024 18:57:17
Cornel

Cornel

2 me gusta en 78 mensajes.

Grupo: User

And there are also some approach using maxima engine/command?
#6 Publicado: 8/10/2024 15:11:16
Martin Kraska

Martin Kraska

1.361 me gusta en 2.275 mensajes.

Grupo: 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.png
RLC.sm (23,17 KiB) descargado 1669 vez(es).
Feder-Masse.png
Feder-Masse.sm (23,13 KiB) descargado 1683 vez(es).
Technische Mechanik mit SMath Studio: https://link.springer.com/book/10.1007/978-3-658-50592-9
#7 Publicado: 9/10/2024 14:42:41
Cornel

Cornel

2 me gusta en 78 mensajes.

Grupo: 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 Publicado: 9/10/2024 18:47:10
Martin Kraska

Martin Kraska

1.361 me gusta en 2.275 mensajes.

Grupo: Moderator

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

Worksheet36.sm (40,73 KiB) descargado 2379 vez(es).
Worksheet36.png
Technische Mechanik mit SMath Studio: https://link.springer.com/book/10.1007/978-3-658-50592-9
  • Nuevos mensajes
  • Sin mensajes nuevos