1.x²-4x+3<0(x-1)(x-3)<01A=(1,3)2x-3>0x>3/2B=(3/2,+∞)A∩B=(3/2,3)选D2.(x+1)(x-2)<0-1x∈Z,B={0,1}A={1,2,3}AUB={0,1,2,3}选C
不清楚