Assume that a gate array contains the type of logic cell depicted in Figure PB.9. The inputs in_1, , in_7 can be connected to either 1 or 0, or to any logic signal. Show how the logic cell can be used to realize f = x_1x_2 + x_3. Show how the logic cell can be used to realize f = x_1x_3 + x_2x_3