Question: 9. For x ( R {0}, let F(x) = f(r) where f is a C2 function on (0, co) and r = (x). Show that

9. For x ( R" \\{0}, let F(x) = f(r) where

9. For x ( R" \\{0}, let F(x) = f(r) where f is a C2 function on (0, co) and r = (x). Show that OF + .. .+ 02F = f"(r) + (n - 1)r-if'(r)

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