Let r = x i + y j + z k and r = |r|. Verify each
Question:
Let r = x i + y j + z k and r = |r|.
Verify each identity.
(a) ∇ • r = 3
(b) ∇ • (r r) = 4r
(c) ∇2r3 = 12r
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a Vr i j 2 k iyjzk1113 x y b V rr V x y z xiyjzk 20 2 3 8 2 3 3 2 x y 1 x y z 4x 4y 4x 4 ...View the full answer
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