Exercises 2.1 Evaluatef = xy + yz for x = 1, y = 0, and z = 1 and for x = 1, y = 1, and z = 0. 2.2 Evaluate y =_cx+_cx for.-c = 0 and x 1 and for c = 1 and x = 1 where-c is an active-low 21% Location 2014 of 10102 signal. 2.3 Proof Demorgan's theorem ay-+y by 100 creating truth tables for f-xy andg+ y. Are the two truth tables identical? 2.4 Proof Demorgan's theoremy y by creating truth tables for f-ry andg Are the two truth tables identical