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How can I integrate the math equation (attachment) numerically?

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Md Jahid Hasan Sagor
Md Jahid Hasan Sagor el 15 de Jun. de 2023
Comentada: Walter Roberson el 16 de Jun. de 2023
Pls see the attachment. There three different functions NL, NR and T which depend on Ex. Here, we have to integrate all with respect to Ex. I have made NL(Ex), NR(Ex) and T(Ex). But I cann't inegrate it altogether. How can I do that? (ingration of Ex*(NL(Ex)-NR(Ex))*T(Ex))

Respuestas (1)

Torsten
Torsten el 15 de Jun. de 2023
Editada: Torsten el 15 de Jun. de 2023
Just as it's written:
result = integral(@(Ex)Ex.*(NL(Ex)-NR(Ex)).*T(Ex),0,Inf)
Of course, I don't know whether you defined the three functions NL, NR and T correctly and if they can cope with array inputs for Ex.
  2 comentarios
Md Jahid Hasan Sagor
Md Jahid Hasan Sagor el 16 de Jun. de 2023
Actually I have done it using quadgk. similar to you. But still it is not solved.
Error Message:
Operator '-' is not supported for operands of type 'function_handle'.
Error in electron_tunnel>@(Ex)Ex.*(NL-NR).*T (line 15)
result = integral(@(Ex)Ex.*(NL-NR).*T,0,Inf)
Walter Roberson
Walter Roberson el 16 de Jun. de 2023
result = integral(@(Ex)Ex.*(NL(Ex) - NR(Ex)).*Tr(Ex), 0, Inf)

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