Repeat Problem 3.47, but for the circuit of Fig. P3.48, which realizes the logic function known as NAND. Hint: assume 5 0, 5 0, and use the fact that two identical FETS in series act like a single FET...

Repeat Problem 3.47, but for the circuit of Fig. P3.48, which realizes the logic function known as NAND. Hint: assume 5 0, 5 0, and use the fact that two identical FETS in series act like a single FET with the same Vt but with k half as large.