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finding numerical integration of vectors

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Moli Wang
Moli Wang 2017-3-5
回答： Torsten 2017-3-6
I have two vectors and I want the numerical integration of the product of this two vectors from zero to infinity. For example, P=integral(A(u)B(u))du from 0 to infinity. A(u) and B(u) are vectors.
How can I do that? Can I use P=trapz(A(u).*B(u))?

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回答（1 个）

Torsten
Torsten 2017-3-6
P = trapz(U,AU.*BU);
where AU and BU are the vectors evaluated at U.
Best wishes
Torsten.

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