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Thread: Math question  3d integrals

09202010, 01:36 AM #11ENTj 738 sx/sp

09202010, 09:11 AM #12
How you approach it depends on what you are solving. For A(h)=pi*h^2 (ie. a form of cone), you wouldn't need to perform a triple integral to find the volume. If you work it from basics it is a triple integral though, because the area came from integration over r and theta, then setting r=h.
So triple integrals are used to find volume from scratch, but are not always a necessary step if you recognise how the crosssectional area behaves. That was the formula onemoretime had, which may or may not be useful depending on what needs to be solved.Freude, schöner Götterfunken Tochter aus Elysium, Wir betreten feuertrunken, Himmlische, dein Heiligtum! Deine Zauber binden wieder Was die Mode streng geteilt; Alle Menschen werden Brüder, Wo dein sanfter Flügel weilt.

09212010, 09:07 AM #13
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