How can I solve this non-linear second order differential equation?

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u''+u'/x+C=0
u-function of x, C - const

could someone solve it for me or at least give a hint??
 
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if you multiply throughout by x^2 you will get

x^2u'' + xu' + cx^2 = 0

which the first part looks like a Euler-cauchy DE so you can solve the homogenous part and then solve for the PI of cx^2.
 
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