Let r = x i + y j + z k and r =|r|. Verify each identity.

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Let r = x i + y j + z k and r =|r|.

Verify each identity.

(a) ∇ · r = 3

(b) ∇ · (rr) = 4r

(c) ∇2r3 = 12r

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Related Book For  answer-question

Calculus Early Transcendentals

ISBN: 9781337613927

9th Edition

Authors: James Stewart, Daniel K. Clegg, Saleem Watson, Lothar Redlin

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