2018-09-02から1日間の記事一覧
Problem 4-2 For a charged particle in a magnetic field the lagrangian is $$ \def\ppdiff#1#2{\frac{\partial #1}{\partial #2}} \def\mb#1{\mathbf{#1}} \def\reverse#1{\frac{1}{#1}} \def\mfrac#1#2{\frac{\,#1\,}{\,#2\,}} L=\frac{m\dot{\mb{x}}^{2…