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Student Support Forum: 'Symbolic Calculation of Lagrange Equations' topicStudent Support Forum > General > "Symbolic Calculation of Lagrange Equations"

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Javier
07/11/12 11:58am

Hi,

in order to obtain the equations of movement of and inverted pendulum mounted on a cart over a seesaw, I have to derive symbolically the Lagrangian equations, which are 3 partial difference equations.
I named them eqn1, eqn2, eqn3.

I obtain these expressions but when I try to derive them I obtain this error:

InverseFunction::ifun: Inverse functions are being used. Values may be lost for multivalued inverses.

and no further derivation is made.

I tried to be pretty coherent with the syntax but I really do not know how to express them. I leave attached my notebook file which is so long to put as a text here.

Best Regards

Attachment: EOM1.nb, URL: ,

Subject (listing for 'Symbolic Calculation of Lagrange Equations')
Author Date Posted
Symbolic Calculation of Lagrange Equations Javier 07/11/12 11:58am
Re: Symbolic Calculation of Lagrange Equations Javier 07/14/12 02:34am
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