设集合A={ x | -5≤X≤3},B={ x | x4},求A∩BCrA∪CrB,
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![设集合A={ x | -5≤X≤3},B={ x | x4},求A∩BCrA∪CrB,](/uploads/image/z/7138638-54-8.jpg?t=%E8%AE%BE%E9%9B%86%E5%90%88A%3D%7B+x+%7C+-5%E2%89%A4X%E2%89%A43%7D%2CB%3D%7B+x+%7C+x4%7D%2C%E6%B1%82A%E2%88%A9BCrA%E2%88%AACrB%2C)
设集合A={ x | -5≤X≤3},B={ x | x4},求A∩BCrA∪CrB,
设集合A={ x | -5≤X≤3},B={ x | x<-2或x>4},求A∩BCrA∪CrB,
设集合A={ x | -5≤X≤3},B={ x | x4},求A∩BCrA∪CrB,
A∩B=[-5,-2)
CrA∪CrB=(-无穷,-5)∪[-2,+无穷)
不对吧,貌似是A∩B=[-5,-2)
CrA∪CrB={ x | x<-2或x≥3}
用数轴做咯~
不用想的这么麻烦,定义域的问题,不管三七二十一先画数轴,则已目了然。自己先做一下,保证算出来。不然再联系我
A∩B=[-5,-3)
CrA∪CrB=(-无穷,-5)∪[-2,+无穷)