For the system governed by the set of equations:

$dx_{1}/dt=2x_{1}+x_{2}+u$

$dx_{2}/dt=-2x_{1}+u$

$y=3 x_{1}$

the transfer function $Y(s)/U(s)$ is given by

1. $3(s+1)/(s^{2}-2s+2)$
2. $3(2s+1)/(s^{2}-2s+1)$
3. $(s+1)/(s^{2}-2s+1)$
4. $3(2s+1)/(s^{2}-2s+2)$
in new
recategorized