1 . 为丰富同学的课余生活,学校开设了形式多样的选修课程.某班级学生进行选课,为达学分要求,每位同学需要在6个课程中任选3个.因特殊原因,有5位同学委托班长帮忙选课.已知各课程缺额人数如下表(缺额人数总和恰好为15),且甲同学要求选择C课程,乙同学要求选择E课程,其余同学无要求.
则在满足甲、乙要求的情况下,这5位同学选课的可能情况共有________ 种(用数字作答).
课程 | A | B | C | D | E | F |
缺额人数 | 0 | 3 | 4 | 2 | 1 | 5 |
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2024-04-15更新
|
180次组卷
|
2卷引用:山西大学附属中学校2023-2024学年高二下学期期中考试数学试题
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2 . 若函数
有两个零点,则实数
的取值范围为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74f9b8f7b3071b1b8d6445d67f006544.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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2024-04-08更新
|
604次组卷
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2卷引用:山西省长治市2023-2024学年高二下学期3月质量检测数学试题
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解题方法
3 . 已知数列满足
是
的前
项和,下列说法正确的是
①若,则
②若
,则
为等差数列
③若,则
为等差数列 ④若
,则
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名校
解题方法
4 . 已知实数
满足
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a1b4df036ac4891acfdba67acef7c44.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f466a508122ea8668979d2040405f8e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28511ad252be26059998accba0020f18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a1b4df036ac4891acfdba67acef7c44.png)
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2024-03-15更新
|
651次组卷
|
4卷引用:山西省大同市第一中学校2023-2024学年高二下学期3月月考数学试题
解题方法
5 . 若存在实数
使得
,则
的值为____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/add6292bdd536832c766b04561b0ef06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ca46e3087a4819b09c5074a9ca178a1.png)
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6 . 定义在
上的偶函数
满足
,且当
时,
,则曲线
在点
处的切线方程为_________________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a43b2faa4f81f32d94612dce724e772b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3f015aeef68bad837ffdea277b6ddfb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04614d0fac9cde995374a43d4323b723.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/067919774f34a1dec2a0476d419f46c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13c9db397c0f983d64234fe2a3e85499.png)
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2024-03-01更新
|
191次组卷
|
2卷引用:山西省运城市康杰中学2023-2024学年高二下学期开学考试数学试题
解题方法
7 . 已知双曲线
的左,右焦点分别为
,直线
与双曲线
在第一、三象限分别交于点
,
为坐标原点.有下列结论:
①四边形
是平行四边形;
②若
轴,垂足为
,则直线
的斜率为
;
③若
,则四边形
的面积为
;
④若△
为正三角形,则双曲线
的离心率为
.其中正确命题的序号是_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85496d18c08287f8b09bfbf0a8c30d06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94f9772b3a117674e43222976a5dc816.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60786e206a7dcea8a21b71c24e300364.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e52586ca2a3b783bc8092415e2d4bf6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
①四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfffd420523729074995e9e55f464d4c.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8178c63d125ee6235feeb2fc70d02745.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7500ce8bce3d902c25c224de4c44bd7.png)
③若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/633e1aaddc2df91226207bfdf417d9b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfffd420523729074995e9e55f464d4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a881309775c3b6a9f4ed408838666342.png)
④若△
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3b208a3046781ec7ac9dfffb2fa72ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04ddf2ae04265e2cbf674ab40bba45c7.png)
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23-24高二下·江苏·开学考试
8 . 已知数列
的前n项和为
,且
,记数列
的前n项和为
若对于任意的
,不等式
恒成立,则实数t的最小值为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3399581f68e9f834cc2c7a85bb5186e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25cbe66fe4e84b4022721122baab4a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68eee81e090b96819b7df54fc1bcc3a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a37a59558292ad6b3d0978bfd7484990.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5244d9da03c136ad52a83d1594306fe.png)
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名校
9 . 双曲线
的左、右焦点分别为
、
,过
的直线
交双曲线于
,
两点,
,
分别位于第一、二象限,
为等边三角形,则双曲线的离心率
为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3040b6c904477030ecf8ba20b2b18759.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5eb2485f90dbfd0dfd6e7d179a856f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/168b3e4b1d6f04226fa2687a72a268b4.png)
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10 . 已知椭圆
的左,右顶点分别为
,动点P在C上(异于点
),点Q是弦
的中点,则
的最大值为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb4402aeb853b22f20992156957ef0fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00442d96d695db2c58bf1fb7165fca94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3b9e816b14051f785aa5aae72b8eed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edc48974114e23f5a801843710c7ae21.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3f0d4bd1a6fd138ef685b0af1ccb397.png)
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