Find the function y = y ( x ) y = y ( x ) (for x > 0 x > 0 ) which satisfies the separable differential equation d y d x = 2 + 15 x x y 2 ; x > 0 d y d x = 2 + 15 x/x y^ 2 ; x > 0 with the initial condition y ( 1 ) = 3 y ( 1 ) = 3