C I A=[-2,-1]
B={x|-a-1
-a-1>=-2
a-1<=-1
a-1>=-a-1 则0
推荐
- 已知全集I=R,A={x|x2-3x+2≤0},B={x|x2-2ax+a≤0,a∈R},若B⊆A,求实数a的取值范围.
- 设全集I=R,已知集合M=﹛x|﹙x+3﹚²≤0﹜,N=﹛x|x²+x-6=0﹜
- 已知全集I={x|x²-3x+2≥0},A={x|x3},B={x|x≤1或x>2}
- 已知全集u={1,2,3,4,5,6},集合A={x|x²-3x+2=0}B={x|2≤x≤4,x∈Z}
- 已知全集I=R,若函数f(x)=x2-3x+2,集合M={x|f(x)≤0},N={x|f′(x)<0},则M∩∁IN=_.
- 2011*2013-2012的二次方
- how many people have you i_____for the job
- 使1-x有意义的x的取值范围是_.
猜你喜欢
