m_{3} = m_{\frac{t_{1} - t_{2}}{t_{2} - t_{0}}} = m_{1} (\frac{t_{1} - t_{0}}{t_{2} - t_{0}})^{2}

${m_3 = m_\frac{t_1-t_2}{t_2-t_0} = m_1(\frac{t_1-t_0}{t_2-t_0})^2}$

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