设全集为U=(1,2,3,4,5,6,7,8),A=(1,2,3,),B=(2,4,6,),求:A∩
设全集U={1,2,3,4,5,6,7,8,9},C u (A U B)={1,3},A ∩ (C u B)={2,4}
设全集为U=(1,2,3,4,5,6,7,8),A=(1,2,3,),B=(2,4,6,),求:A∩
设全集为U=﹛1,2,3,4,5,6,7,8,9},A包含于U,B包含于U,且CuA∩B=﹛1,9﹜,A∩B=﹛2﹜,C
设全集U={1,2,3,4,5,6,7,8},集合A={2,4,6},集合B={3,4,5},求A∩B,A∪B,A在U中
设全集U={1,2,3,4,5,6,7,8,9},Cu(A∪B)={1,3},A∩(CuB)={2,4},求集合B.
设全集为U={1,2,3,4,5,6},A={1,3,5,6},B={3,4}.求A∩B,A∪B,C∪A,C∪B.
设全集U={1,2,3,4},A与B均是U的子集,若A∩B=(2,4),则称(A,B)为一个“理想配集”规定(A,B)与
高一数学:设全集U={1,2,3,4,5,6,7,8,9},Cu(A∪B)={1,3},A∩(CuB)={2,4}.求集
题设全集U=R,A={X小于等于6}求:(1)A∩空集.A∪空集(2)A∩R,A∪R(3)全集A的补集(4)A∩(全集A
设全集为U={1,2,3,4},集合A,B都是U的子集,若A交B={1,3},称为A,B为“理想配集”,记作(A,B)
设全集为U={1,2,3,4},集合A,B都是U的真子集,若A交B={1,3},称为A,B为“理想配集”,且(A,B)与
设全集U=R,A={x/2x的平方-7x+3≤0},B={x/x的平方+a<0} (1)a=-4时求A∩B、A∪B