- #1
CINA
- 61
- 0
Homework Statement
[tex]y''+4\left(y'\right)^{2}+8=0[/tex]
Homework Equations
[tex]u=y'?[/tex]
The Attempt at a Solution
I don't really know where to start, do I use u=y' substituted? So, y''=u*(du/dy)?
That leads to [tex]u\frac{du}{dy}+4u^{2}+8=0[/tex]
I don't think this is correct, since it leads to [tex]y(x)=-\frac{u^{2}}{16}-\frac{ln (u)}{4}[/tex]