Here's the question you clicked on:
chuyenvien94
y''-2xy=0
y''/y=2x |dw:1351085740477:dw|
Make a sub ... \( \sqrt[3]2 x = z \) and get the solution as Airy function http://www.wolframalpha.com/input/?i=y%27%27+-+2xy+%3D0
y = 0 y'' = 0 0 - 0 = 0 :)
that is also a solution ... and this is called trivial solution.