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1 . 已知直线
经过两点
,
,则它的斜率为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5800c6d0b70eb19a205fc83a070ccd1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a80a5bed5c0f5514bffd7ea196c5ce39.png)
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2 . 数列
满足
(
为正整数),且
与
的等差中项是5,则首项![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7999465d0e871febde66296a0cbf058c.png)
______
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02ce9d5623b21817dd182b9058dc271a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e88093a749c0d46e0ee931ecfaff925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daf464629fa321a6ff7401ab79f07083.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7999465d0e871febde66296a0cbf058c.png)
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7日内更新
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168次组卷
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3卷引用:专题04数列全章复习攻略--高二期末考点大串讲(沪教版2020选修)
3 . 直线
的倾斜角为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76d4bf927dc9908d573434578a25d5a4.png)
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4 . 对于变量
,条件![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51441c8788ff11be766766227793246d.png)
,条件![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce20ef9c08e82df8c7f45bac6dd31d36.png)
,则
是
的( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51441c8788ff11be766766227793246d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4e482e4b0a8d1eef67ef0066839af65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce20ef9c08e82df8c7f45bac6dd31d36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70b9c582302b8768bf5ab8ff5a5a1c20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
A.充要条件 | B.充分不必要条件 | C.必要不充分条件 | D.既不充分也不必要条件 |
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5 . 下列各式中正确的是( )
A.![]() | B.![]() | C.![]() | D.![]() |
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2024-06-01更新
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551次组卷
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3卷引用:5.2导数的基本运算
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6 . 已知函数
,则自变量x由1变到1.1时,
的平均变化率为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f496911266e86ff15d128b01657838cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
A.0.21 | B.![]() | C.2.1 | D.![]() |
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2024-05-31更新
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291次组卷
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3卷引用:5.1.1变化率问题
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7 . 已知随机变量
分别服从二项分布
,若
,则下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6867a7873e4818c12074206da32f0ed4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56e0261d70239126fa87c9f0c84e4b92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d83cb3b6dacb13f2b792e7c14a8f84be.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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2024高二下·全国·专题练习
8 . 某射手射击所得环数
的分布列如下:
若
成等差数列,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b734e8f1546481e3eb4976008a045de.png)
![]() | 7 | 8 | 9 | 10 |
P | x | 0.1 | 0.3 | y |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b49e5112241378dd283ff833351dd3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d419c30ff40e9b368a3f151f639dac8f.png)
A.7.3 | B.8.9 | C.9 | D.9.4 |
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9 . 公差不为零的等差数列
的前n项和为
,若
,则
( )
![](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/ab70d105702b3e0b2293c69bf4f2fa4b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd707b69a11f8de5566f23c1a2a9ff5a.png)
A.4 | B.6 | C.7 | D.9 |
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2024-05-16更新
|
776次组卷
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4卷引用:高二数学期末模拟试卷02【好题汇编】-备战2023-2024学年高二数学下学期期末真题分类汇编(北师大版2019选择性必修第二册)
(已下线)高二数学期末模拟试卷02【好题汇编】-备战2023-2024学年高二数学下学期期末真题分类汇编(北师大版2019选择性必修第二册)广东省高州市2024届高三下学期适应性考试数学试题河北省沧州市部分示范性高中2024届高三下学期三模数学试题陕西省西安市第一中学2024届高三第十六次模拟考试数学(文科)试题
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10 . 如果三个数
,
,
成等差数列,则
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/878e89b6eca35e34c863e832a2c661db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c0ef98473f6ec705d80d79f3cff556b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.4 | B.3 | C.1 | D.![]() |
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