The h parameter of a 2 port network is \(= \left[ {\begin{array}{*{20}{c}} 3&5\\ 6&7 \end{array}} \right].\) Then find the value of input impedance (Z11) of the two port network.
1
\(- \frac{9}{7}\)
2
\(- \frac{6}{7}\)
3
\( - \frac{8}{7}\)
4
\(- \frac{5}{7}\)