Consider the following MOS Amplifier where R1 = R2 = 14 kohm, RD = 26 kohm, IS = 0.23 mA, and RL = 100 kohm. The MOSFET parameters are: knW/L = 5 mA/V, VT = 0.6 V, and lambda = 0.013 V^-1. Find the voltage gain vout/vin.