已知集合A={x∈R||x|<2},B={x∈R|x+1≥0},则A∩B=( ) A.(﹣2,1]  

已知集合A={xR||x|2}B={xR|x+10},则AB=(  )

A.(﹣21]     B[12   C[1+      D.(﹣2+

答案

B

【考点】交集及其运算.

【分析】由绝对值不等式的解法求出A,由交集的运算求出AB

【解答】解:由题意知,A={xR||x|2}={x|2x2}=(﹣22),

B={xR|x+10}={x|x1}=[1+),

AB=[12),

故选B

相关题目

I finished my __________ exams last week.             A. end of year
I finished my __________ exams last week.             A. end of year      B. end-of-year            C. year-of-end     D. year-end
用纯合的二倍体水稻品种高秆抗锈病(DDTT)和矮秆不抗锈病
用纯合的二倍体水稻品种高秆抗锈病(DDTT)和矮秆不抗锈病(ddtt)进行育种时,一种方法是杂交得到F1,F1再自交得到F2;另一种方法是用F1的花粉进行
 It is clear that his presentation on how to prevent pollution ______ steady e
 It is clear that his presentation on how to prevent pollution ______ steady economic growth is quite well done. A. to keep                  B. keeping              
50 g浓度为c mol·L-1,密度为ρ g·cm-3的氨水中加入一定量的
50 g浓度为c mol·L-1,密度为ρ g·cm-3的氨水中加入一定量的水稀释成0.5c mol·L-1,则加入水的体积为( ) A.小于50 mL                       
There is a popular belief among parents      16    schools are no long
There is a popular belief among parents      16    schools are no longer interested in spelling. No school in      17    I have ever taught has ever ignored spelling or considered i
个体经济是以________为基础的所有制形式。( ) A.劳动者自己
个体经济是以________为基础的所有制形式。( ) A.劳动者自己劳动                B.社会统一劳动 C.手工作坊                  D.商品
抛物线y=x2上的点到直线y=2x-4的距离最短的点的坐标为A.(,) 
抛物线y=x2上的点到直线y=2x-4的距离最短的点的坐标为A.(,)                                                             
The kind of office equipment will certainly make a(n)        to the way 1
The kind of office equipment will certainly make a(n)        to the way 1 do my job. A. sense         B. difference         C. effect          D. meaning  

最新题目