Help for a "Surface and Flux integrals" program

11042017, 10:50 AM
Post: #18




RE: Help for a "Surface and Flux integrals" program
(11042017 10:38 AM)salvomic Wrote: This fact induce me to think that we should find a way to help user with the changes of coordinates too... I disagree: the formulas take care of that automatically provided that you parametrise your surface (or curve, or manifold) correctly. Hence my earlier remark that A needs to be a rectangle. So if the range of integration in your "natural" corrdinate space is not a rectangle then you have got your parametrisation wrong and need to fix that first before doing the integration. You might want to introduce a separate function for transforming the differentials between one parametrisation and another, but I thnk the Prime already has an implementation of the required Jacobian that can be used... 

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