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判断实数-2,-3,-的大小关系,用<连结
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点P.是△ABC内一点连结BP并延长交AC于D.连结PC则图中∠1∠2∠
的大小关系是( ) A.∠A.>∠2>∠1
∠A.>∠2>∠1
∠2>∠1>∠A
∠1>∠2>∠A.
直线ax+y+1=0与连结A.23B.-32的线段相交则a的取值范围是________.
已知向量a=12b=-23若ka+b与a-kb垂直则实数k的值等于.
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(-2,3]
(-2,3)
[-2,3)
[-2,3]
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(﹣∞,3]
[2,3]
(2,3]
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设集合
={x|2
={x|a≤x≤a+3},若
,则实数a的取值范围是( ) A.[2,3]B.(3,+∞)
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已知集合
={x||x﹣a|<1},
={x|1<x<4},则A∪B.=B,则实数a的取值范围是( ) A.[2,3] B.(2,3)
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实数ab在数轴上的位置如图所示则a与b的大小关系是
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如图P.是等边三角形ABC内的一点连结PAPBPC以BP为边作∠PBQ=60°且BP=BQ连结CQ.
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