Euler Lagrange equation

[SP_9781969]

I would like to take time derivatives of a Lagrangian function to develop equations of motion. I am not able to find anything online. Any help would be greatly appreciated.

[SP_9781969]

Any information or help is much appreciated 

[Werner_E]

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@SP_9781969 wrote:

I would like to take time derivatives of a Lagrangian function

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Its not clear to me what you are actually looking for. Obviously you know how to create a derivative in Prime