Alternative Equation Formats

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MathML

\begin{array}{rcl} h_{11, t} & = & c_{11} + a_{11}^{2} ϵ_{1, t - 1}^{2} + 2 a_{11} a_{21} ϵ_{1, t - 1} ϵ_{2, t - 1} + a_{21}^{2} ϵ_{2, t - 1}^{2} \\ + g_{11}^{2} h_{11, t - 1} + 2 g_{11} g_{21} h_{12, t - 1} + g_{21}^{2} h_{22, t - 1} \\ h_{12, t} & = & c_{12} + a_{11} a_{12} ϵ_{1, t - 1}^{2} + (a_{21} a_{12} + a_{11} a_{22}) ϵ_{1, t - 1} ϵ_{2, t - 1} + a_{21} a_{22} ϵ_{2, t - 1}^{2} \\ + g_{11} g_{12} h_{11, t - 1} + (g_{21} g_{12} + g_{11} g_{22}) h_{12, t - 1} + g_{21} g_{22} h_{22, t - 1} \\ h_{22, t} & = & c_{22} + a_{12}^{2} ϵ_{1, t - 1}^{2} + 2 a_{12} a_{22} ϵ_{1, t - 1} ϵ_{2, t - 1} + a_{22}^{2} ϵ_{2, t - 1}^{2} \\ + g_{12}^{2} h_{11, t - 1} + 2 g_{12} g_{22} h_{12, t - 1} + g_{22}^{2} h_{22, t - 1} \end{array}

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Math as LaTeX Source

\begin{eqnarray*} h_{11,t} & =& c_{11} + a_{11}^2\epsilon ^2_{1,t-1} + 2a_{11}a_{21}\epsilon _{1,t-1}\epsilon _{2,t-1} + a_{21}^2\epsilon ^2_{2,t-1} \\ & & + g_{11}^2 h_{11,t-1} + 2g_{11}g_{21}h_{12,t-1} + g_{21}^2h_{22,t-1} \\ h_{12,t} & =& c_{12} + a_{11}a_{12}\epsilon ^2_{1,t-1} + (a_{21}a_{12}+a_{11}a_{22}) \epsilon _{1,t-1}\epsilon _{2,t-1} + a_{21}a_{22}\epsilon ^2_{2,t-1} \\ & & + g_{11}g_{12} h_{11,t-1} + (g_{21}g_{12}+g_{11}g_{22})h_{12,t-1} + g_{21}g_{22}h_{22,t-1}\\ h_{22,t} & =& c_{22} + a_{12}^2\epsilon ^2_{1,t-1} + 2a_{12}a_{22}\epsilon _{1,t-1}\epsilon _{2,t-1} + a_{22}^2\epsilon ^2_{2,t-1} \\ & & + g_{12}^2 h_{11,t-1} + 2g_{12}g_{22}h_{12,t-1} + g_{22}^2h_{22,t-1} \\ \end{eqnarray*}