hey look...............
i m telling u the easiest method...........
look...........
y=
[2 ]
(3x+2) y2= 3x+2
differentiating we get................
2 y dy/dx= 3
again differentiating we get....................
2[ y d2y/dx2 + ( dy/dx)2] = 0
therefore
ans is ..................
[ y d2y/dx2 + (dy/dx)2] =0
hope u got the answer ...............
thanku.........