Fucntional Derivatives and Variational Calculus

*To*: mathgroup at yoda.physics.unc.edu*Subject*: Fucntional Derivatives and Variational Calculus*From*: CHALLACOMBE at baeyer.chem.fsu.edu*Date*: Thu, 8 Apr 1993 15:16:41 -0400 (EDT)

MathGroup, I am looking for papers, books, pakages or pointers regarding implimentation of the varirational calculus within Mma. For instance I would like to be able to take the variational dervatives of complicated integral equations: J[y]:=Integrate[F[x,y[x],y'[x], ... ],x] ; find del_J[y]/del_y Thanks in advance, Matt.