how to calculate the integral of the area difference between these two curves?

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Priscilla Schmitz 2019-6-21

评论： Star Strider 2019-6-21

Hi,

I need to calculate the integral of the area in green, how do i do that on MATLAB?

I use trapz to integrate.

Thank you

infinity 2019-6-21

Hello,

Here is my suggestion that can be done by trapz.

First, you use trapz to calcultate integral of "blue" line with dB from 60 to 100. We can name its as S1.

Then, you use trapz to calcutate integral of "blue" line with dB from 60 to 75. We can name it as S2.

Next, you use trapz to compute integral of "red" line with dB from 75 to 100. We can name it as S3.

Finally, you compute S = S1 - S2 - S3.

Hope this would help you.

good, how do i find the intersection points between two curves?

Star Strider 2019-6-21

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