Is it possible to perform integration from zero to inf in Matlab?

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Sergey Dukman 2015-9-29

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评论： Sergey Dukman 2015-9-29

Hello, I have two data vectors and would like to integrate their product from zero to infinity. Is it even possible and how?

Regards, Sergey

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Steven Lord 2015-9-29

That's an impressive machine that has enough memory to store an infinitely long vector. Can you clarify exactly what you have? Vectors, functions, etc?

Sergey Dukman 2015-9-29

I have two vectors that represents Rayliegh distribution coefficients and actual power output of a wind turbine. In order to compute the average power output, those two components needs to be multiplied by each other and result integrated. But the power output is a function of wind speed. It means that I need to integrate from 0 to my mean wind value at the given height.

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Answer 1

Walter Roberson 2015-9-29

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If you had two functions you could create another function that was the multiple of the others and then integrate that:

h = @(x) f(x) .* g(x)
integral(h, 0, inf)

But if you have data vectors then they must be finite vectors and it would not seem to make sense to integrate a finite vector to infinity. Please expand on your meaning about the vectors?

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Sergey Dukman 2015-9-29

I agree. I just was not sure that I need to integrate from zero to inf. Those to vectors represents Rayliegh distribution coefficients and actual power output of a wind turbine. In order to compute the average power output, those two components needs to be multiplied by each other and result integrated. But the power output is a function of wind speed. It means that I need to integrate from 0 to my mean wind value at the given height.

Sergey

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