Formula_7285

\[\frac{d}{d t_{1}} \int_{0}^{2 \pi} F_{1}^{2} d \tau+\frac{d}{d t_{2}} \int_{0}^{2 \pi} F_{2}^{2} d \tau+\frac{\gamma_{1}+\gamma_{2}}{\gamma_{3}} \frac{d}{d t_{3}} \int_{0}^{2 \pi} F_{3}^{2} d \tau=0\]