
\magnification=\magstep2

$$
I(x, y) \quad = \quad I_0 \thinspace 
          e^{- {\left( (x - x_0)^2 + (y - y_0)^2 \right) / 2 \sigma^2 } }
$$

$$
K^2 \quad = \quad \sum_i{ \left( {{\rm data}_i - {\rm model}_i} \right) ^2} 
$$


$$
V(t) \quad = \quad 1.0 \thinspace 
          e^{- {\left( (t - t_0)^2 / 2 (0.4255)^2 \right) } }
$$

\bye
