Ode symbolic solution with IC

#1 Posted: 7/1/2023 5:56:48 AM

Valery Ochkov

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See please one ODE symbolic solution without IC
dsolve.sm (4.93 KiB) downloaded 1186 time(s).

#2 Posted: 7/1/2023 7:55:36 AM

Jean Giraud

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See please one ODE symbolic solution without IC

We have it done for exporting formula c/w constants & IC
Jean

ODE_Laplace 2nd [Type 3].sm (34.42 KiB) downloaded 950 time(s).

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Valery Ochkov 7/1/2023 9:20:00 AM

#3 Posted: 7/1/2023 9:20:10 AM

Valery Ochkov

66 likes in 682 posts.

Group: User

Wrote

Wrote
See please one ODE symbolic solution without IC

We have it done for exporting formula c/w constants & IC
Jean

ODE_Laplace 2nd [Type 3].sm (34.42 KiB) downloaded 950 time(s).

Thanks!
But no way to do so in SMath

#4 Posted: 7/1/2023 10:51:35 AM

Valery Ochkov

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Wrote

Wrote
Thanks!
But no way to do so in SMath

"L & m" are missing in dsolve result ?

m is missing in dsolve.

#5 Posted: 7/1/2023 2:48:44 PM

Alvaro

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See please one ODE symbolic solution without IC

Hi Valery. Use Ctrl+Shift+K for write D(x)(0), which means x'(0)

Best regards.
Alvaro.

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Valery Ochkov 7/2/2023 4:05:00 AM

#6 Posted: 7/2/2023 4:06:01 AM

Valery Ochkov

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Group: User

Wrote

Wrote
See please one ODE symbolic solution without IC

Hi Valery. Use Ctrl+Shift+K for write D(x)(0), which means x'(0)

Best regards.
Alvaro.

Thanks!
dsolve-ICs.sm (10.61 KiB) downloaded 1197 time(s).

#7 Posted: 7/3/2023 3:43:12 AM

Alvaro

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The distance between the cities added.

GravityTrain.sm (31.01 KiB) downloaded 1121 time(s).
GravityTrain.pdf (233.1 KiB) downloaded 672 time(s).

Best regards.
Alvaro.

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Valery Ochkov 7/3/2023 4:18:00 AM

#8 Posted: 7/3/2023 7:30:35 AM

Jean Giraud

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Earth distance companion added.
Sanity check Air Industry.
Jean

Angle Vincenty Earth Distance [Mike].sm (49.78 KiB) downloaded 927 time(s).

#9 Posted: 7/4/2023 2:14:47 AM

Valery Ochkov

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The Boundary problem?
dsolve-Boundary.sm (17.01 KiB) downloaded 1162 time(s).

#10 Posted: 7/4/2023 9:30:11 AM

Valery Ochkov

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A pendulum

#11 Posted: 7/4/2023 6:53:08 PM

Alvaro

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A pendulum ...

The exact solution needs some handwrite work.

Edited: a hard handwrite work. Previous version was wrong.

Correct solution -> pendulum v2.sm (13.73 KiB) downloaded 1162 time(s).

Wrong solution -> pendulum.sm (13.88 KiB) downloaded 1147 time(s).

Best regards.
Alvaro.

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Valery Ochkov 7/5/2023 6:23:00 AM

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Ode symbolic solution with IC - How to solve? - Messages