Alternative Equation Formats

$$\begin{array}{rcl}{y}_{1,t}& =& {\mathrm{\theta <!--\; \theta \; --><span\; class="Comment\_comment\_\_N0+Yl"></span>}}_1+({\mathrm{\theta <!--\; \theta \; --><span\; class="Comment\_comment\_\_N0+Yl"></span>}}_2+{\mathrm{\theta <!--\; \theta \; --><span\; class="Comment\_comment\_\_N0+Yl"></span>}}_3{\mathrm{\theta <!--\; \theta \; --><span\; class="Comment\_comment\_\_N0+Yl"></span>}}_4^t{)}^{-<!--\; -\; --><span\; class="Comment\_comment\_\_N0+Yl"></span>1}+{\mathrm{\theta <!--\; \theta \; --><span\; class="Comment\_comment\_\_N0+Yl"></span>}}_5{y}_{2,t}+{\mathrm{ϵ<!--\; ϵ\; --><span\; class="Comment\_comment\_\_N0+Yl"></span>}}_{1,t}\\ y_{2,t}& =& {\mathrm{\theta <!--\; \theta \; --><span\; class="Comment\_comment\_\_N0+Yl"></span>}}_6+({\mathrm{\theta <!--\; \theta \; --><span\; class="Comment\_comment\_\_N0+Yl"></span>}}_7+{\mathrm{\theta <!--\; \theta \; --><span\; class="Comment\_comment\_\_N0+Yl"></span>}}_8{\mathrm{\theta <!--\; \theta \; --><span\; class="Comment\_comment\_\_N0+Yl"></span>}}_9^t{)}^{-<!--\; -\; --><span\; class="Comment\_comment\_\_N0+Yl"></span>1}+{\mathrm{\theta <!--\; \theta \; --><span\; class="Comment\_comment\_\_N0+Yl"></span>}}_{10}{y}_{1,t}+{\mathrm{ϵ<!--\; ϵ\; --><span\; class="Comment\_comment\_\_N0+Yl"></span>}}_{2,t}\end{array}$$

$$\begin{array}{rcl}{y}_{1,t}& =& {\mathrm{\theta <!--\; \theta \; --><span\; class="Comment\_comment\_\_N0+Yl"></span>}}_1+({\mathrm{\theta <!--\; \theta \; --><span\; class="Comment\_comment\_\_N0+Yl"></span>}}_2+{\mathrm{\theta <!--\; \theta \; --><span\; class="Comment\_comment\_\_N0+Yl"></span>}}_3{\mathrm{\theta <!--\; \theta \; --><span\; class="Comment\_comment\_\_N0+Yl"></span>}}_4^t{)}^{-<!--\; -\; --><span\; class="Comment\_comment\_\_N0+Yl"></span>1}+{\mathrm{\theta <!--\; \theta \; --><span\; class="Comment\_comment\_\_N0+Yl"></span>}}_5{y}_{2,t}+{\mathrm{ϵ<!--\; ϵ\; --><span\; class="Comment\_comment\_\_N0+Yl"></span>}}_{1,t}\\ y_{2,t}& =& {\mathrm{\theta <!--\; \theta \; --><span\; class="Comment\_comment\_\_N0+Yl"></span>}}_6+({\mathrm{\theta <!--\; \theta \; --><span\; class="Comment\_comment\_\_N0+Yl"></span>}}_7+{\mathrm{\theta <!--\; \theta \; --><span\; class="Comment\_comment\_\_N0+Yl"></span>}}_8{\mathrm{\theta <!--\; \theta \; --><span\; class="Comment\_comment\_\_N0+Yl"></span>}}_9^t{)}^{-<!--\; -\; --><span\; class="Comment\_comment\_\_N0+Yl"></span>1}+{\mathrm{\theta <!--\; \theta \; --><span\; class="Comment\_comment\_\_N0+Yl"></span>}}_{10}{y}_{1,t}+{\mathrm{ϵ<!--\; ϵ\; --><span\; class="Comment\_comment\_\_N0+Yl"></span>}}_{2,t}\end{array}$$

\begin{eqnarray*} y_{1,t} & =& {\theta }_{1} + ( {\theta }_{2} + {\theta }_{3} {\theta }^{t}_{4})^{-1} + {\theta }_{5}y_{2, t} + {\epsilon }_{1,t} \\ y_{2,t} & =& {\theta }_{6} + ( {\theta }_{7} + {\theta }_{8} {\theta }^{t}_{9})^{-1} + {\theta }_{10}y_{1, t}+ {\epsilon }_{2,t} \end{eqnarray*}