1 . 已知不等式
的解集为
,若
,则
的概率为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49a744f41ee80b330e1cee8784bd5b53.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28319174975bd87487e49585c65a79a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d0ad4c1f729282504d95279eabf45f7.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2 . 函数
的最大值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/425c84caa7abbbbe481dbbea5f99095d.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2012高三·黑龙江·竞赛
3 . 函数
的图像与直线
、
所围成的区域面积是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f2eff609c6043c2a89a6dd163fe2244.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d93246539f83796d6b2101b7bf0c7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8f6ff473f5587fe84dce919e347c980.png)
A.1 | B.![]() | C.![]() | D.![]() |
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4 . 已知数列
中,
,
.
⑴设
,若
,求θ的取值范围;
(2)定义在(-1,1)内的函数
,对任意
,有
,若
,试求数列
的通项公式.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e976c0663fa749ca749f99842d21ca03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1c4cdcb32e3a0ce527c13978c022a54.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4448b10094d46d4aeb2fd8f0aa4635c.png)
⑴设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d5af4331dd10648dc9edd6501dc2484.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d2406f06e8b7064fe019fe0a93c0571.png)
(2)定义在(-1,1)内的函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1a56fcf52017481efbfd06831b065ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4bf92155f517ac547552711d7e1804d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7790a91bcbbc414071d2ad1649fc8e7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf502cfa14d59e0c4efe782e7d7eed8b.png)
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2006高三·黑龙江·竞赛
5 . 如图,已知椭圆长轴端点A、B,弦EF与AB交于点D,O为椭圆中心,且
,2DE+DF=0,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/16/6958eb97-c3cd-46e7-8ee5-ea1684ab91ee.png?resizew=131)
(1)求椭圆长轴长的取值范围;
(2)若D为椭圆的焦点,求椭圆的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e679998f879a9db382992a9547ec37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c346614238468ed7f21383b50e3b5509.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/16/6958eb97-c3cd-46e7-8ee5-ea1684ab91ee.png?resizew=131)
(1)求椭圆长轴长的取值范围;
(2)若D为椭圆的焦点,求椭圆的方程.
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2006高三·黑龙江·竞赛
6 . 设
是定义在R上的以2为周期的函数,且是偶函数,在区间
上,
.矩形
的两个顶点A、B在x轴上,C、D在函数
的图像上,求矩形ABCI面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44284ff1ea50429a0610e13363be6080.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc7637efb627d345f53335610d6b708e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8dbe7aee1f2ae22197b7d22847481d4.png)
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2006高三·黑龙江·竞赛
7 . 如图,
的内切圆
分别切BC、CA于点D、E,直线BI交DE于点G,求证:AG⊥BG.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79516f18a7daf0ad467a48e16d0e65f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/20/572e1e50-1003-49d0-b61c-e160924c6b9d.png?resizew=124)
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2006高三·黑龙江·竞赛
8 . 甲乙两位同学各有5张卡片.现以投掷均匀硬币的形式进行游戏.当出现正面朝上时,甲赢得乙一张卡片,否则,乙赢得甲一张卡片.规定投掷硬币的次数达9次或在此之前某人已赢得所有卡片时,游戏终止.设
表示游戏终止时掷硬币的次数.求
取各值时的概率.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b734e8f1546481e3eb4976008a045de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b734e8f1546481e3eb4976008a045de.png)
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2006高三·黑龙江·竞赛
9 . 已知常数a>0,向量
,
,经过定点
以
为方向向量的直线与经过定点
以
为方向向量的直线相交于点P,其中,
则点P的轨迹方程为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4afe6f71b07b224c29f5de5f79930631.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93b02a3b7df299315f3763967f28892f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00f12892d8ebba14216ee980bde99295.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7c35834ab6779555c1925e053d4b0d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00e78d18c5973b090bb65fe0e779e4db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e6922e00eac32dd64252b64ba2b50c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f71e1a5c60a26f1585d9b81131cfcbb.png)
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