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Definite integrals documentation

Posted 21 nov. 2014, 12:47 UTC−5 Version 4.3 1 Reply

Nihal Acharya
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Hi,

I am using the mathematics module in COMSOL and would like to know how to type out definite integrals. The integration operator (intop1) seems like it is used to calculate indefinite integrals. How can I type out say, {integral (0 to 1) x.dx} ?
1 Reply Last Post 24 nov. 2014, 03:23 UTC−5
Lasse Murtomäki
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Posted: 1 decade ago 24 nov. 2014, 03:23 UTC−5
Integral operations are typically used for coupling. For example, use the integral of flow across a given surface as the boundary condition in a transport problem. Hence, it is a definite integral. I guess that users on this forum are able to give more examples how integral coupling can be utilized. I have used it in global plots, i.e. in plotting current across an electrode as a function of time dependent potential which is a global variable, not time as such.

br
Lasse
Integral operations are typically used for coupling. For example, use the integral of flow across a given surface as the boundary condition in a transport problem. Hence, it is a definite integral. I guess that users on this forum are able to give more examples how integral coupling can be utilized. I have used it in global plots, i.e. in plotting current across an electrode as a function of time dependent potential which is a global variable, not time as such. br Lasse

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