Alternative Equation Formats

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MathML

\begin{array}{rcl} ϵ_{1 t} & = & \frac{1}{H} \sum_{h = 1}^{H} {y_{t} - (a + b x_{t} + s u_{t, h})} \\ ϵ_{2 t} & = & \frac{1}{H} \sum_{h = 1}^{H} {y_{t}^{2} - (a + b x_{t} + s u_{t, h})^{2}} \end{array}

Math Rendered as SVG

Math as LaTeX Source

\begin{eqnarray*} \epsilon _{1t} & =& \frac{1}{H} \sum _{h=1}^ H \{ y_ t - ( a + b x_ t + s u_{t,h}) \} \\ \epsilon _{2t} & =& \frac{1}{H} \sum _{h=1}^ H \{ y_ t^2 - ( a + b x_ t + s u_{t,h})^2 \} \nonumber \end{eqnarray*}