Use the method of Lagrange multipliers to show that, among all functions D(r) which satisfy
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Use the method of Lagrange multipliers to show that, among all functions D(r) which satisfy ∇ · D = ρf, the minimum (not merely the extremum) of:
Occurs when D(r) = εE(r). Assume that ˆn · D takes specified values on the boundary surface of the volume V of integration.
Transcribed Image Text:
UE=/fd³r |D|²/€
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