I have the time derivative of the lagrangian:
$$\frac{\mathrm d \mathcal L}{\mathrm d t}=\sum_i\left(\frac{\partial \mathcal L}{\partial q_i}\frac{\mathrm d q_i}{\mathrm d t}+\frac{\partial \mathcal L}{\partial \dot{q_i}}\frac{\mathrm d \dot{q_i}}{\mathrm d t}\right)+\frac{\partial \mathcal L}{\partial t}$$
Can someone explain how I can obtain that expression?
I have the time derivative of the lagrangian:
Can someone explain how I can obtain that expression?
I have the time derivative of the lagrangian:
$$\frac{\mathrm d \mathcal L}{\mathrm d t}=\sum_i\left(\frac{\partial \mathcal L}{\partial q_i}\frac{\mathrm d q_i}{\mathrm d t}+\frac{\partial \mathcal L}{\partial \dot{q_i}}\frac{\mathrm d \dot{q_i}}{\mathrm d t}\right)+\frac{\partial \mathcal L}{\partial t}$$
Can someone explain how I can obtain that expression?
I have the time derivative of the lagrangian:
Can someone explain how I can obtain that expression?
