[[TODO]]
&mimetex($f(y_1, y_2|x) = f(y_1|x) f(y_2|x)$);~
&mimetex($f(y_1|x) = \frac{1}{2 \pi \sigma ^2} exp(- \frac{(x-y_1)^2}{2 \sigma^2})$);~
&mimetex($f(y_2|x) = \frac{1}{2 \pi \sigma ^2} exp(- \frac{((50-x)-y_2)^2}{2 \sigma^2})$);~
&mimetex($\frac{\partial}{\partial x}(log f(y_1, y_2|x)) = -\frac{2}{\sigma^2}(x - \frac{50-y_2+y_1}{2})$);~
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&mimetex($\begin{bmatrix}\theta_t \\ b_t \end{matrix} = \begin{bmatrix}\theta_{t-1}+(\omega_t - b_t) \Delta t \\ b_{t_1} \end{matrix} = \begin{bmatrix} 1 & -\Delta t \\ 0 & 1 \end{matrix} \begin{bmatrix}\theta_{t-1} \\ b_{t-1} \end{matrix} + \begin{bmatrix} \Delta t \\ 0 \end{matrix} \omega_t$);~
&mimetex($a = g sin(\theta)$);
&mimetex($H_t = \begin{bmatrix} g & 0 \end{matrix});$);
&mimetex($H_t = \begin{bmatrix} g & 0 \end{matrix}$);~