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={1,2,3}, ={2,4},则如图阴影部分表示的集合为( ) A.{0,2}B.{0,1,3} {1,3,4} {2,3,4}
ARRAY(0,2) ARRAY(1,0) ARRAY(5) ARRAY(2,4)
={1,2,3}, ={2,4},则( ) A.{1,2,4}B.{2,3,4} {0,2,4} {0,2,3,4}
={1,2,3}, ={2,4},则(∁U.A.)∪B为( ) A.{1,2,4}B.{2,3,4} {0,2,3,4} {0,2,4}
[0,2] R (﹣1,4] (﹣1,0]∪[2,4]
(0,1), (1,0), (4,3),则顶点 的坐标为( ) A.(3,4)B.(4,3) C.(3,1)D.(3,8)
(2,0,0,-1/2) (3,2,-2,1/2) (2,-1,0,-1/2) (4,3,3,1/2) (4,3,-3,1/2)
={1,2,3}, ={2,4},则 U.A.∪B.为( ) A.{1,2,4}B.{2,3,4}C.{0,2,4} {0,2,3,4}
(1,3)→(1,2)→(1,1)→(1,0)→(2,0)→(3,0)→(4,0)
(1,3)→(0,3)→(2,3)→(0,0)→(1,0)→(2,0)→(4,0)
(1,3)→(1,4)→(2,4)→(3,4)→(4,4)→(4,3)→(4,2)→(4,0)
以上都不对
[﹣1,0)∪(0,1] [﹣4,﹣2]∪(0,1] [﹣4,﹣2]∪[2,4] [﹣1,0)∪[2,4]
={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}
(1,0),(4,3) 或
{1,4} {(1,0),(4,3)}
={1,2,3}, ={2,4},则(∁U.A.)∪B为( ) A.{1,2,4} B.{2,3,4} {0,2,4} {0,2,3,4}
)∪B为( ) A.{0,1,2,4} {0,1,3,4} {2,4} {4}
[2,4] (-∞,0] (0,1]∪[2,4] (-∞,0]∪[1,2]