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Ashley P.

asked • 10/22/19

Vector Differentiation

Prove that (grad)^2 f(r) = D^2/dr^2 + (2/r) Df/Dr


Where D^2/dr^2 refers to the second partial derivative of f , w.r.t. r and


Df/ Dr refers to partial derivative of f, w.r.t r


vector r = xi + yj + zk and f(r) is twice differentiable

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