A={x/2a≤x≤a+3}.B={x/x<-1或x>5}.求:①若A∩B≠空集,求a的取值范围.②若A∪B=R(R为实数集)
A={x/2a≤x≤a+3}.B={x/x<-1或x>5}.求:①若A∩B≠空集,求a的取值范围.②若A∪B=R(R为实数集),求a的取值范围.最好要有解题过程...
A={x/2a≤x≤a+3}.B={x/x<-1或x>5}.求:①若A∩B≠空集,求a的取值范围.②若A∪B=R(R为实数集),求a的取值范围.最好要有解题过程
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