Study guide: Introduction to finite element methods

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The finite element algorithm

The differential equation problem defines the integrals in the variational formulation.

Request these functions from the user:

integrand_lhs(phi, r, s, x)
boundary_lhs(phi, r, s, x)
integrand_rhs(phi, r, x)
boundary_rhs(phi, r, x)

Must also have a mesh with vertices, cells, and dof_map