Alternative Equation Formats

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MathML

\begin{array}{rcl} \ln (σ_{i, t}^{2}) & = & c_{i} + \sum_{l = 1}^{q} a_{i i, l} (b_{i i, l} \frac{ϵ_{i, t - l}}{σ_{i, t - l}} + | \frac{ϵ_{i, t - l}}{σ_{i, t - l}} | - \sqrt{\frac{2}{π}}) + \sum_{l = 1}^{p} g_{i i, l} \ln (σ_{i, t - l}^{2}) i = 1, \dots, k \end{array}

Math Rendered as SVG

Math as LaTeX Source

\begin{eqnarray*} {\ln }( \sigma _{i,t}^2) & =& c_ i + \sum _{l=1}^{q} {a_{ii,l}\left(b_{ii,l}\frac{\bepsilon _{i,t-l}}{\sigma _{i,t-l}} +|\frac{\bepsilon _{i,t-l}}{\sigma _{i,t-l}}| -\sqrt{\frac{2}{\pi }}\right)} + \sum _{l=1}^{p}{g_{ii,l}{\ln }( \sigma _{i,t-l}^2)} ~ ~ ~ ~ i=1,\ldots , k\\ \end{eqnarray*}