how to calculate a radial symmetric integration [closed]

K(x) = |x|, where x is n dimension vector, How to calculate the convolution ∂r(K ∗ u) in n dimensions, where u(r) is radial symmetric about r, n is greater than 3, thanks!

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sheb bian -- I would suggest you expand the question (explain the notation you are using for instance) and post it on maths.stackexchange.com – algori Oct 10 2011 at 22:52