Why do you think you're wrong? If you substitute your answer into the original ODE you get
which I believe identically satisfies your ODE!
with
The goal is to find the other solution.
my attempt
Substituting into the original equation I get...
substituting with u'' with v'...
I integrate to
integrating again...
but the answers supposed to be where did I go wrong? thanks
Because of this...
http://www.mathhelpforum.com/math-he...wn-181831.html
So there are more than two solutions?