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{﹣1,0,1,2,3,4} {1,2,3,4}
{0} ∅
={x | x2 -x-6≤0}, ={x|>0},那么集合A (CUB.)= A.{x|-2≤x<4}B.{x|x≤3或x≥4} {x|-2≤x≤0} {x|0≤x≤3}
={1,2,3,4}, ={x∈N||x|≤2},则A.∩B=( ) A.{1,2,3,4}B.{﹣2,﹣1,0,1,2,3,4} {1,2} {2,3,4}
={1,2,3,4,5}, ={x∈R|x≥2},则右图中阴影部分所表示的集合为( ) A.{1} B.{0,1} {1,2} {0,1,2}
={x|x2-3x+2=0}, ={x|x=2a,a∈A.},则集合∁U.(A.∪B.)中元素的个数为( ) A.1B.2 3 4
={﹣1,0,2,4},则∁U.A.=() A. φ {0,2,4} {1,3} {﹣1,1,3}
={1,2,3,4,5}, =[3,+∞),则图X11中阴影部分所表示的集合为( ) 图X11 A.{0,1,2}B.{0,1} {1,2} {1}
={1,2,3,4,5}, ={x∈R|x≥2},则右图中阴影部分所表示的集合为( ) A.{1} B.{0,1} {1,2} {0,1,2}
{﹣1,0,1,2,3} {0,1,2,3,4} {1,2,3} {0,1,2,3}
={x∈N|0≤x≤5},∁A. ={1,3,5},则集合B.=( ) A.{2,4}B.{0,2,4} {0,1,3} {2,3,4}
{1,2,3,4} {-2,-1,0,1,2,3,4}
{1,2} {2,3,4}
{1,2} {0,1,2}
{0,1} {﹣1,0,1,2,3,4}
{﹣1,0,1,2,3} {0,1,2,3,4} {1,2,3} {0,1,2,3}