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12.2: Опрацьовані приклади
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\[0=\lim _{\Delta t \rightarrow 0} m_{b} \frac{\Delta v}{\Delta t}+\lim _{\Delta t \rightarrow 0} \frac{\Delta m_{w}}{\Delta t} v+\lim _{\Delta t \rightarrow 0} \frac{\Delta m_{w} \Delta v}{\Delta t}-...\[0=\lim _{\Delta t \rightarrow 0} m_{b} \frac{\Delta v}{\Delta t}+\lim _{\Delta t \rightarrow 0} \frac{\Delta m_{w}}{\Delta t} v+\lim _{\Delta t \rightarrow 0} \frac{\Delta m_{w} \Delta v}{\Delta t}-\lim _{\Delta t \rightarrow 0} \frac{\Delta m_{w}}{\Delta t} u \nonumber \]