Подскажите как пронумеровать формулы
Код:
\[\frac{\partial H}{\partial t}\ + \frac{\partial (Hv_x)}{\partial x}\ + \frac{\partial (Hv_y)}{\partial y}\ = \sigma,\]
\[\frac{\partial (Hv_x)}{\partial t}\ + \frac{\partial }{\partial x}(Hv^2_x + \frac{1}{2}g_0H^2)\ + \frac{\partial (Hv_xv_y)}{\partial y}\ = - \frac{1}{2} \Lambda Hv_x\sqrt{\mathstrut v^2_x+v^2_y} - g_0H \frac{\partial b}{\partial x}\ + Hf^{(Cor)}_x,\]
\[\frac{\partial (Hv_y)}{\partial t}\ + \frac{\partial (Hv_xv_y)}{\partial x}\ + \frac{\partial }{\partial y}(Hv^2_y + \frac{1}{2}g_0H^2)\ = - \frac{1}{2} \Lambda Hv_y\sqrt{\mathstrut v^2_x+v^2_y} - g_0H \frac{\partial b}{\partial y}\ + Hf^{(Cor)}_y,\]