解题方法
1 . 已知等差数列
的前
项和为
,若
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30025459b3eac8c2b10b47d7a4eb8ba3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5af1f1b7e9e20d799ee3c06b89a0611c.png)
A.130 | B.145 | C.175 | D.290 |
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解题方法
2 . 已知向量
,
,且
∥
,则
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e5d4af9e447f5437018b6b2067218a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c7d8eb0bda4b035cdf29262b58d9ba3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/433b94c39737727e53468df419d8314a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
A.10 | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
名校
3 . 下列结论正确的是( )
A.若![]() ![]() | B.若![]() ![]() |
C.若![]() ![]() | D.若![]() ![]() |
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2020-05-20更新
|
408次组卷
|
2卷引用:湖南省郴州市2019-2020学年高二下学期学业水平考试模拟检测数学试题
4 . 已知集合
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e99fa8e2445580fe76e4af8d51c690f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32320cdd139df01195da0d86d1d45ffe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4b9b470218359a4a47be9244980489e.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2020-05-20更新
|
427次组卷
|
4卷引用:湖南省郴州市2019-2020学年高二下学期学业水平考试模拟检测数学试题
解题方法
5 . 长方体
中,
,
,则直线
与平面
所成角的大小为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d262480ffb55b7617f44b63f130c154a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1192b3111a6dad01bba5227472bb4072.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24bb49fdc6b6bbb2449fdf8a0de769d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
A.30° | B.45° | C.60° | D.90° |
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2020-05-20更新
|
249次组卷
|
2卷引用:湖南省郴州市2019-2020学年高二下学期学业水平考试模拟检测数学试题
6 . 已知函数
,若
,且
,则
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/befe97588d685728a71a04b023f67cb0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2714f1eb0e74a1a31fa2c35275d368e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3604274ad6707a906eba371a9e884144.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2741ca619df1d9ab3d9ced4c49142dc.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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解题方法
7 . 若变量
、
满足约束条件
,则
的最大值为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f07ca20f5f21931c8dcbb50d1e5e94e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4489516aca67a6afe53fac2f1477f76.png)
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8 . 关于
的不等式
的解集为
,则以
为圆心,
为半径的圆的标准方程是________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33a1f86b4a5330727015867732ff6a0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/267eda4eb02924140d1b39be8c6192d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30277e0be448b4955903e81e8795e45d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20d6fc9b90f370fbb27552876b650f8f.png)
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9 . 已知函数
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/3/389caa60-1a82-4318-aad9-f6f572d87690.png?resizew=210)
(1)在如图所给的平面直角坐标系中画出该函数的图象;
(2)直接写出函数
的单调增区间及零点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5902d816562564716b3d40b8c1e6968.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/3/389caa60-1a82-4318-aad9-f6f572d87690.png?resizew=210)
(1)在如图所给的平面直角坐标系中画出该函数的图象;
(2)直接写出函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
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2020-05-03更新
|
337次组卷
|
2卷引用:湖南省郴州市2019-2020学年高二下学期学业水平考试模拟检测数学试题
名校
10 . 过点
且与直线
垂直的直线方程是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab1242ec96ac54e2fd418988d5190a88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7cbfb26504c5bd8a68686703b500d4d.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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2020-05-03更新
|
304次组卷
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3卷引用:湖南省郴州市2019-2020学年高二下学期学业水平考试模拟检测数学试题