How should one implement $$\int _{\Omega }\nabla u\cdot \nabla v\,d\Omega \ =\ \int _{\Gamma }v\,\nabla u\cdot {\hat {\mathbf {n} }}\,d\Gamma -\int _{\Omega }v\,\nabla ^{2}u\,d\Omega\,,$$ Symbolically for an example? I don't want to do numerical integration but rather give the information of the left hand side and get the right hand side of the equation above.



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