The Y- parameter presentation of the circuit shown in the figure is.______
1
\(\frac{1}{3}\left[ {\begin{array}{*{20}{c}} 2&1\\ 1&1 \end{array}} \right]\)
2
\(\frac{1}{3}\left[ {\begin{array}{*{20}{c}} 1&{ - 1}\\ { - 1}&2 \end{array}} \right]\)
3
\(\frac{1}{3}\left[ {\begin{array}{*{20}{c}} { - 1}&1\\ 1&{ - 2} \end{array}} \right]\)
4
\(\frac{1}{3}\left[ {\begin{array}{*{20}{c}} 2&{ - 1}\\ { - 1}&1 \end{array}} \right]\)