12.2 A source-follower circuit using NMOS transistors is constructed following the pattern shown in Fig. 12.3. All three transistors used are identical, with Vt = 0.5 V and μnCoxW/L = 20 mA/V2; VCC = 2.5 V, R = RL = 1 kΩ. For linear operation, what are the upper and lower limits of the output voltage, and the corresponding inputs? −1.1 V < v0 < 1.191 V; −1.6 V < vI < 3 V;