# Answer to Question #70090 in Other Physics for Manoj

Question #70090

Reduce the following PDE to a set of three ODEs by the method of separation of variables. d^2u/dr^2 +(2/r)(du/dr)+(1/r^2)(d^2u/d thita ^2) +(cot thita/r^2)(du/d thita) + (1/r^2 sin^2thita)(d^2u/d phi ^2) =0

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