II J (X) = g(r), r = [X], and n ≥ 3, show that 8²f 0х12 V²f= + + for x = 0. (b) Deduce from (a) that, if V²ƒ = 0, then f(x) = 8²f n 2 axn² X a n - 2 - + b₂ r 1 - g'(r) + g″(r) x = 0,

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