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VariationalD
returns the variational derivative of the integral 
with respect to 
, where the integrand f is a function of u, its derivatives, and x.
returns the variational derivative of the multiple integral 
with respect to 
, where f is a function of u, its derivatives, and the coordinates x, y, ... .
gives a list of variational derivatives with respect to u, v, ... .
更多信息
- To use
, you first need to load the Variational Methods Package using Needs["VariationalMethods`"].
