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===== Prerequisites =====

  * **Dot Product**  (for finding the components of vector field perpendicular to surface)
  * **Cross Product**  (for finding unit vector normal to surface)
  * **Electric Field as vector field** (for calculating electric flux)
  * **Surface Element in Rectangular and Curvilinear Coordinates** (finding unit vector normal to surface)
  * **Scalar Surface Integrals** (for finding total flux)
  * **Volume Element in Rectangular and Curvilinear Coordinates** (for finding total enclosed charge for Gauss' Law)
  * **Volume Integrals** (for finding total enclosed charge for Gauss' Law)
  * **Charge Density** (for finding total enclosed charge for Gauss' Law)
  * **Total Charge** (for Gauss' Law)
  * **Partial Derivatives** (for derivation of the Divergence Theorem)
  * **Limit Definition of Derivative** (for derivation of the Divergence Theorem)

Related Prior Homework
  * **CrossTriangle**: students calculate the unit vector normal to a slanted surface

Optional:
  * **Theta Functions** (for special charge distributions)
  * **Delta Functions** (for special charge distributions)

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