解题方法
1 . 已知长方体
中
,
,
.
(1)求直线
与平面
所成角的正弦值;
(2)记长方体ABCD-
中两条平行的棱所在直线为1对平行直线,从长方体
所有棱所在的直线中任取4条,记这4条直线中平行直线的对数为X,求X的分布列与期望.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ced06b71073e1bb777f326f06016ce17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09d27bd71d79cb19eb554175e4ef0867.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e55a2310cbba5e050488cd9296eb195d.png)
(1)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fe734023d4e70010a6b2cc3267cb86e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7935fe3125f247b7bea4f065ce9ad985.png)
(2)记长方体ABCD-
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632f2bf1cd0435041fa04b01901d1c8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
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2卷引用:江西省赣州市2022-2023学年高二下学期期中调研测试数学试题
2 . 已知数列
的前n项和为
,
,
.
(1)证明:
是等差数列;
(2)设数列
的前n项和为
,从下面两个条件中任选一个,证明:
.
①
;②
.
注:如选择多个条件分别解答,按第一个解答计分.
![](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/e9645bd4d2002993b90ec6d48f9c04f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64bd8926511b2c0bb610cbefb6c8b570.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)设数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c215db1d8f69757118ad405b78035628.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2424d7f7f95dc4ff25e7bd91b180b1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18ec386f0f3ddad65efa9fac2d5bc5d0.png)
注:如选择多个条件分别解答,按第一个解答计分.
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名校
3 . 已知![](https://staticzujuan.xkw.com/quesimg/Upload/formula/120c98f94c1714aeb5a3861b7abd4beb.png)
(1)若
,求曲线
在
处的切线方程;
(2)若过点
的直线
与曲线
在
处相切,求实数a的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/120c98f94c1714aeb5a3861b7abd4beb.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b4d795709b0abcf47bceec2250f2f9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
(2)若过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fe413b12ffabfb252121aa2eaa31017.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
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4卷引用:江西省赣州市2022-2023学年高二下学期期中调研测试数学试题
4 . (1)已知数列
的通项公式为
,求
的前n项和
;
(2)已知数列
的通项公式为
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d798925bba91ca76a7a7efaf4d56383d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
(2)已知数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47dee512e0fdb19fc03858ce717ce8b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8466bcaf16a010cec79e408cfdebcc47.png)
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解题方法
5 . 已知椭圆
经过点
,且离心率为
,抛物线
的焦点F与
的右焦点重合.
(1)求
与
的标准方程;
(2)过
的右顶点的直线与
交于A,B两点,线段AB的中点为E,点O为坐标原点,证明:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69e9291badf5048bcc19919189105c08.png)
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd486b8796b3454eab219c28ed131683.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adb37c2e95bac79d1c187351cef39e83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56d266a04f3dc7483eddbc26c5e487db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a4ac6fb4079a522ea7858254b598e0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
(2)过
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69e9291badf5048bcc19919189105c08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d7e9c75b42521500ec077f761ae66d1.png)
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名校
6 . 对于
的展开式,若所有二项式系数的和为512
(1)求n;
(2)展开式的常数项是第几项;
(3)求展开式有多少个有理项?并写出
升幂排列的第二个有理项.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f008aed283e9d76b6478b7e2596713d3.png)
(1)求n;
(2)展开式的常数项是第几项;
(3)求展开式有多少个有理项?并写出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
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7 . 已知函数
(其中
是自然对数的底数),
.
(1)讨论函数
的单调性;
(2)若
在
上恒成立,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd5ac308e2f2a6c4eb791d47d9ab18bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/041a7c8fc017f596542c5e6ec7d1c40b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4b856ad4e7c0d749151a5b9d6b97d2d.png)
(1)讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/447d6f62c09c1d05346fd16a24159f6e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d562dc22dfb3b81d0c3f88b54d063c2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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解题方法
8 . 已知函数
.
(1)求
的单调区间;
(2)若方程
的两个实根分别为
(其中
),求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33019d7d0296b3ae468bfbfb746be545.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb101c5df08aa35ae24a6416840b199b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26d8dafc71b106f39f4e15442220897b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/920cbdd84f46039c5a109adca0bec9a0.png)
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解题方法
9 . 已知函数
.
(1)求曲线
在点
处的切线方程;
(2)求函数
在
上的最大值和最小值;
(3)设
,证明:对任意的
,有
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a9de663b1fa8c103874079c5887b83b.png)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c9f8845aa2b51c460f2d798c9f62fa3.png)
(2)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e205a5122e143150e455f69bff98a650.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/469f9653302200578214e3372c6e7d7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c58c1659dffbd5bd9e2428641dfd022.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e320f0a2c68ef9a4bfa8d9aa9da6e9a.png)
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4卷引用:江西省赣州市南康区唐江中学2022-2023学年高二下学期期中数学试题
10 . 在数列
中,
,
.
(1)求证:数列
为等比数列,并求数列
的通项公式;
(2)设
,求数列
的前
项和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbe7bdaaf8b0adf10bf2ef6c1255b1dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fad9d14999647e188c90a1adf6ac4e3e.png)
(1)求证:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a1cbdba005d5a2041870d638f5b4c2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f1179414a71459a3cfa134ace94302e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
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10卷引用:江西省赣州市兴国平川中学2022-2023学年高二下学期期中数学试题
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