- #1
Confundo
- 39
- 0
Homework Statement
Homework Equations
http://books.google.co.uk/books?id=...hl=en&sa=X&oi=book_result&resnum=10&ct=result
The Attempt at a Solution
I don't understand how they're gone from (4) to (5) after making that substitution for U_o the [tex]k^2U_0[/tex] term becomes a derivative why?