> This is what I want to do in deal.II. u(k) and w(k) are solutions of two
> PDEs in the same domain D, where k is a parameter in the PDEs. I want to
> compute the inner product <f_i, I>, where f_i are functions over domain D,
> and I is an integral of k^2 * u(k) * w(k) from k_min to k_max. For
> simplicity, we can assume u and w live in the same finite element space.

You would do quadrature as usual over all cells, and approximate the integral 
over k via one-dimensional quadrature as well.

W.

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Wolfgang Bangerth                email:            [email protected]
                                 www: http://www.math.tamu.edu/~bangerth/
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