# GATE Papers >> ECE >> 2014 >> Question No 353

Question No. 353

A stable linear time invariant (LTI) system has a transfer function $H\left(s\right)=\frac{1}{{s}^{2}+s-6}$. To make this system causal it needs to be cascaded with another LTI system having a transfer function H1(s). A correct choice for H1(s) among the following options is