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2. In free space, let D = 8xyz*ā, + 6x²z*ā, + 16x²yz°ā, pC/m².
a. Find the total electric flux passing through the rectangular surface
z = 2, 0<x < 2, 1<y<3, in the ā, direction.
b. Find E at P(2,–1,3).
c. Find an approximate value for the total charge contained in an
incremental sphere located at P(2, –1,3) and having a volume of
10-12m³.

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