* <math> c = \exp \left\{ \frac{1}{1-\beta_I} \left[ \ln \frac{(1-\beta_I)c_I}{(1-c_L)}\right] \left[ 1- \left(\frac{1-\beta_L}{1-\beta_I}\right)\left(\frac{c_L}{1-c_L}\right) \right] + \frac{\beta_{I}(1-\beta_L)}{(1-\beta_I)^2}\left(\frac{c_L}{1-c_L}\right) \right\}</math> | * <math> c = \exp \left\{ \frac{1}{1-\beta_I} \left[ \ln \frac{(1-\beta_I)c_I}{(1-c_L)}\right] \left[ 1- \left(\frac{1-\beta_L}{1-\beta_I}\right)\left(\frac{c_L}{1-c_L}\right) \right] + \frac{\beta_{I}(1-\beta_L)}{(1-\beta_I)^2}\left(\frac{c_L}{1-c_L}\right) \right\}</math> |