Question: Finite-Element Matrices For the hat functions from Section 5.2 calculate for arbitrary subinterval Dk all nonzero integrals of the form ij dx,
Finite-Element Matrices For the hat functions ϕ from Section 5.2 calculate for arbitrary subinterval Dk all nonzero integrals of the form ϕiϕj dx, ϕ iϕj dx, ϕ iϕ j dx and represent them as local 2 × 2 matrices.
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