Obtain the transfer function and b=16. F(s) + + X(s) F(s) for the block diagram when a=1 1 s+b 4 The obtain the characteristic equation for 3 X(s) F(s)* 3 s+a X(s) Compare this characteristic equation with the standard form s + 2wns + w/12 = 0 below up to two decimal places. Enter the damping ratio (Written solutions are optional. Only if you want partial credit)