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→Definition
::::::::::::::::::''geometric definition''
::::::::::::::::::''geometric definition''
==Computation==
This is an unwieldy definition, so we frequently use the equivalent statement
<math>\nabla \cdot \vec{F} = \frac{\partial f_1}{\partial x} + \frac{\partial f_2}{\partial y} + \frac{\partial f_3}{\partial z}</math>
or in two dimensions, just
<math>\nabla \cdot \vec{F} = \frac{\partial f_1}{\partial x} + \frac{\partial f_2}{\partial y}</math>.
=The Curl=
=The Curl=