4 a. Write down the equations (and only those) which are needed to determine

the voltage at node X. Do NOT plug in any values yet. Neglect short channel

effects and assume that ^p=0.

b. Determine the required width of the transistor (for L = 0.25µm) such that X

equals 1.5 V.

c. We have, so far, assumed that M1 is a long-channel device. Redraw the

load lines assuming that M₁ is velocity-saturated. Will the voltage at X rise or

fall?