find the require values of W/L and of R so shown in Figure

4.41 The MOSFET in Fig. P4.41 has V, =1V, k = 100 A/ v, and 2 = 0. Find the required values of W/L and of R so that when v,= VDo = +5V, ros = 50 2, and vo = 50 mV. VDD R FIGURE P4.41