I got the correct answer, but how does the r|r|^2 formula work? My work is shown...

Question

Question

I got the correct answer, but how does the r|r|^2 formula work? My work is shown in the second picture.

Calculate the divergence of the following radial field. Express the result in terms of the position vector r and its length r

div ² = 1 + ( x (x2 + y² + z²)* f g (y (y e xx +3 (21x2+4242-)) 1 = 1(x2 + y 2, 22) + x (2+)] + [1(+²+y² + 22) tyle) +1(x + y

math calculus

Answer 1

Answer #1

F = < x 9,z> (x+y+z) F = < +zyx , ムキッチェ) , キッチェリー> qen カスかん Divergene (Dive) - 21 + + = [(x+y+z6x) + (メキッチン)(3) + - (キュイック()

Answer 2

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