littybriedan littybriedan

30-07-2016
Mathematics

contestada

When changing an integral to polar coordinates, DxDy becomes rDrDtheta. Can anyone give a satisfying explanation for where this r comes from?

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Hussain514 Hussain514

01-08-2016

"The differential dx dy represents an element of area in cartesian coordinates, with the domain of integration extending over the entire xy-plane. An alternative representation of the last integral can be expressed in plane polar coordinates r, θθ"

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