$6$

Determine the transfer function of this system by reducing its shown block diagram.

Select one:

$2.$ None of these

b$.\frac{C(s)}{R(s)}=\frac{G_1{G}_2}{1+G_1+G_2{H}_1}$

c $\frac{C(s)}{R(s)}=\frac{G_1{G}_2}{1G_1-G_1{G}_2{H}_1}$

d $\frac{C(s)}{R(s)}=\frac{G_1}{1|G_1|G_1{G}_2{H}_1}$

$\frac{C(s)}{R(s)}=\frac{G_1{G}_2}{1|G_1|G_1{H}_1}$