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A potential (i.e. steady-state, incompressible, inviscid, irrotational) flow can be described by a stream function w(x,y) that minimizes the functional vlv(x,y)- Admissible stream functions v(x,y) must be twice continuously differentiable and satisfy given }ady n( boundary conditions. Determine the Euler-Lagrange (Ostrogradski) equation

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Solulon:- 乙x. Jy Зу

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