TeX Quellcode:

\displaystyle \frac{\text{d}}{\text{d}t}(\varphi_1 - \varphi_2) = 2\pi\cdot\nu_\text{LO}\cdot \frac{\text{d}\tau_\text{g}}{\text{d}t}- \frac{\text{d}\varphi_\text{LO}}{\text{d}t}\,\text{,}