2.34 The circuit in Fig. P2.34 utilizes an ideal op amp.
(a) Find I1, I2, I3, IL, and Vx.
(b) If VO is not to be lower than −8 V, find the maximum allowed value for RL.
(c) If RL is varied in the range 100 Ω to 500 kΩ, what is the corresponding change in IL and in VO?