ParamD

• ParamD[params][expr] represents the multiple ordinary derivative of expr with respect to the sequence params of parameters, automatically sorted into canonical order.

• Parametric derivatives with respect to different parameters are assumed to commute.
• See: Section 4.8.
• See also: DefParameter, OverDot.
• New in version 0.
• Last update: 25-X-2007 for version 0.9.3 of xTensor`.

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