User contributions
- 12:49, 9 January 2015 (diff | hist) . . (-31) . . Talk:Aufgaben:Problem 12 (→Exercise)
- 16:29, 31 December 2014 (diff | hist) . . (-2) . . Talk:Aufgaben:Problem 12 (→Exercise)
- 16:26, 31 December 2014 (diff | hist) . . (+763) . . Talk:Aufgaben:Problem 12
- 16:20, 31 December 2014 (diff | hist) . . (+4,166) . . N Talk:Aufgaben:Problem 12 (Created page with "In polar coordinates is \( \vec{x} = \begin{pmatrix} r \cos \phi \\ r \sin \phi \end{pmatrix} \). Then we can calculate \( \dot{\vec{x}} \) depending on \( \dot{r} \) and \(...")