(1) | \ln {\mu}_{12} = \frac{x_1}{_1 + \alpha \, x_2} \cdot \ln {\mu}_1 + \frac{\alpha \cdot x_1}{_1 + \, \cdot x_2} \cdot \ln {\mu}_2 |
(1) | \ln {\mu}_{12} = \frac{x_1}{_1 + \alpha \, x_2} \cdot \ln {\mu}_1 + \frac{\alpha \cdot x_1}{_1 + \, \cdot x_2} \cdot \ln {\mu}_2 |