设全集U=R,集合A=﹛Χ|-1≤Χ＜3﹜,B=﹛Χ|2Χ-4≥Χ-2﹜1.求Cu﹙A∩B﹚2.若集合C=﹛Χ|2Χ+a＞0﹜,满足B∪C=C,求实数a的取值范围.

设全集u=R集合A 设全集U=R,集合A={X|-3 设全集U=R集合A={-3 设全集U=R,集合A={X|-3 设全集U=R,集合A={X|-1 设全集U=R,集合A={x|-1 设全集U=R,集合A={x/1 设全集U=R,集合A=(x|-1 设全集U=R,集合A={x|-1 设全集U=R,集合A=（X|-1 若全集U=R,集合A={χ|-3 设全集U=R,集合A={x∈R|-1≤x 设全集U=R,集合A={X|≤1或3≤X}集合B={X|K 设全集U=R,集合A={x丨-1≤x 设全集U=R,集合A={x丨-1≤x 设全集U=R,集合M={X丨3a-1 设全集U=R,集合M={x|3a-1 设全集U=R,集合M={X丨3a-1