What is Del operater ?
Answer:- When a given field is expressed more than one variable say three variables x,y&z (In terms of Cartesian coordinates) then the operater two be used for obtaining rate of change is called del operater.
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What is gauss divergence theorem ?
Answer:- It states that the volume integral of the divergence of a vector field A taken over any volume V is equal to the surface integral of A taken over the closed surface surrounding the volume V. I.e