名校
解题方法
1 . 从
名男生和
名女生中选出
名学生参加一项活动,要求至少一名女生参加,不同的选法种数是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d91e07104b699c4012be2d26160976a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2020-03-14更新
|
1512次组卷
|
4卷引用:天津市静海区第一中学2019-2020学年高二下学期期中考试数学试题
名校
2 . 已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30a7705ca7bb870a1495cd1ec19e6b70.png)
且
在
上单调递减,且关于x的方程
恰好有两个不相等的实数解,则
的取值范围是_____________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30a7705ca7bb870a1495cd1ec19e6b70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5d74d706d2e4392e25016e9101d07ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37fa1476cf3552b9ae91ef039b1c6c80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d0b082837bee50f5cd0bf6aabfb92f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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名校
3 . 已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/035dafd18ed4f9d5b815cbc7f99aed4a.png)
(1)当
时,
与
的图象在
处的切线相同,求
的值;
(2)当
时,令
,若
存在零点,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/035dafd18ed4f9d5b815cbc7f99aed4a.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcbd5bb726a08c308b48373afebbb768.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f3c2be7482719651bcf491949681e05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61c388166862b3ccfcc7ca749ebe5949.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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名校
4 . 已知函数
.
(1)若函数
在定义域单调递增,求实数
的取值范围;
(2)如果在(1)的条件下,
在
内恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/853279ad02acdac8c840ffeb360b2c17.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(2)如果在(1)的条件下,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64ea00b31c01a8bad36104a23f838b7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcac1e85463a3177f487d896b3d1d24c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
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名校
5 . 方程
有正数解,则
的取值范围是_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48c0cde398742339917138c8fcc45d95.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
名校
6 . 已知函数
,满足对于
,都有
,则
的取值范围是_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/138bf47d8e069da852bbb3db399d11c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8625151f40f341575c1a71992e485188.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/717a1efcded39ade5c5e98eeb21013e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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名校
解题方法
7 . 若函数
,
,对于![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9aabf628775d5ff1a4668d4ac8af7d8.png)
,
,使
,则a的取值范围是_____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5397ee1eb6d157f6ec1e7a878f8d16e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1db719f78be99ee3fac8c1cdb96e2eab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9aabf628775d5ff1a4668d4ac8af7d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa66623cf54b42d6d12be4c8edaa7071.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db37a30cc9c01c37f6f14ba27c898f22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc7082c68f1bfd946d8caade98963861.png)
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2020-03-12更新
|
821次组卷
|
3卷引用:2019届天津市静海县第一中学高三9月学生学业能力调研数学(理)试题
解题方法
8 . 设
为平面
外的一条直线,
的方向向量为
,
的法向量为
,则对于下列结论,各选项说法正确的为( )
①若
,则
;②若
,则
;③设
与
所成的角为
,则
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/560ee2894ba8c5cee6633430cc8b3b41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36f1a8e551cba7ec9f451749f60e628d.png)
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33ee59964f020fc52b5ba66a3f5fcc3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87446a7f3d8663e3fa62157adcbe2835.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e380108ba2cf04e68a5a9393d2b921c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28d85a71b6985090505c3f01c541eb29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d891f5d68eec7e921b29ad70b1047fa1.png)
A.只有①正确 | B.只有②③正确 | C.只有①③正确 | D.①②③都正确 |
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2020-03-10更新
|
389次组卷
|
2卷引用:天津市静海区大邱庄中学2021-2022学年高二上学期第一次诊断性检测数学试题
名校
解题方法
9 . 已知
,
,
,则
,
,
的大小关系为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66f75c2445d8c0aca6ad186f3fc85b49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d89385ba13ce6f751dd2311a842614b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7213a29ed8133fa81fe4572c4d3f63e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2020-03-04更新
|
711次组卷
|
8卷引用:天津市静海一中2019-2020学年高一上学期期末数学试题
名校
解题方法
10 . 过点
且与直线l:
垂直的直线方程为______ .(请用一般式表示)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51116e96f4c35d90677e91e0aa914111.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/260d9a9e5329ad68090d2f442c635bcc.png)
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2020-03-02更新
|
955次组卷
|
8卷引用:天津市静海区瀛海学校2021-2022学年高二上学期第一次质量检测数学试题