解题方法
1 . 已知集合
,
,若
,则实数
的取值范围为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95158921864da5500d2c9d529d9923f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19f4cde12869125b1eebc2c6c8ae22cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96f1ba0a1129741502600e47bf058c98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
解题方法
2 . 设椭圆
的左、右焦点分别为
,
,点
,
在
上(
位于第一象限),且点
,
关于原点对称,若
,
,则
的离心率为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851a5d6ec23256f9b4a9e98aa92945fe.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/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b70ab5ecd6a6c0d779a4deb9ec2896d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c31e7ae0b3a25da86153027c53941994.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
3 . 已知关于x的方程
有两个不同的实根,则实数a的取值范围为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc10cada0fa4b65b19684098503a01c6.png)
您最近一年使用:0次
解题方法
4 . 已知函数
满足
有定义,
,当
时,
,且当
都有意义时,
,则以下说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f54b6a060d6c51a328341df76013bd89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d87cd4403487962c38c8707ba3ab3fa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eaae91ed6da60e86e3bb9b3eb7e03e60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/018857ec6e498113b3b12a730d9313da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e5da099cb92d6dc87ffcfca7cf58bed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d4d176cd4cefa84cd1cec0163689703.png)
A.![]() | B.![]() |
C.![]() ![]() | D.![]() ![]() |
您最近一年使用:0次
解题方法
5 . 已知圆锥
的轴截面为等边三角形,
都是底面圆
的直径,弧
的长度是弧
长度的
,母线
上有
两点,
平面
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/5/ee849799-8243-47b9-8bb0-12f4b44ce67c.png?resizew=224)
(1)求
;
(2)求
与平面
所成角的正弦值;
(3)若底面圆
的半径为1,求点
到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18e5ef91fb27dd684a27ae7f1993cfba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5c4cd264c97c1f261229925cc5a6761.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a6e2867f32d3f1c3cd36cd3a11a8580.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cee6f5c97bf9968c6b47d8a8aeee6796.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7495688c046142f688c822209c0e968e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/5/ee849799-8243-47b9-8bb0-12f4b44ce67c.png?resizew=224)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7495688c046142f688c822209c0e968e.png)
(3)若底面圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7495688c046142f688c822209c0e968e.png)
您最近一年使用:0次
解题方法
6 . 若集合
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ff9b5e289371d8b5e17fb6d6b820a9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1336d38741aab2255a35c26612bbd7cc.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
7 . 《庄子·天下》中讲到:“三尺之棰,日取其半,万世不竭.”这其实是一个以
为公比的等比数列问题.有一个类似的问题如下:有一根一米长的木头,第2天截去它的
,第3天截去第2天剩下的
,…,第n天截去第
天剩下的
,则到第2022天截完以后,这段木头还剩下原来的( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dac452fbb5ef6dd653e7fbbef639484.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5aadf9ab510510120699c5eee39ab18b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee6a2eba56d4f2d1670b0256b8d86b92.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2023-01-19更新
|
391次组卷
|
4卷引用:福建省宁德市高级中学2023届高三上学期期末模拟数学试题(二)
福建省宁德市高级中学2023届高三上学期期末模拟数学试题(二)(已下线)第三节 等比数列 B素养提升卷广西壮族自治区贵港市西江高级中学2022-2023学年高二下学期2月月考数学试题(已下线)专题07 等比数列及其前n项和6种常见考法归类(2)
8 . 已知抛物线
的焦点为F,抛物线上一点
满足
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3764ba3aa0a241787f4661026bb14053.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f485dd70ae4e5053696809f13969881.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b7b05be52c3d8ebf684fd011e62ed83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df5be1440d099f464ef46dee39de6010.png)
A.1 | B.2 | C.![]() | D.![]() |
您最近一年使用:0次
解题方法
9 . 已知数列
满足
,对
,有
.
(1)证明:数列
为等比数列;
(2)若
,求n的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b08c58baacec3cd0c0a06e267fa9ec5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92416d9f0f9d1ff14dd7b69d4cf1e944.png)
(1)证明:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7247e908ae9f496669049aa69c5ffe5.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30d218b71e778339b59045655a91f9c4.png)
您最近一年使用:0次
10 . 如图,在
中,
,以
为直径的半圆上有一点M,
,则
( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/28/81422376-1875-41bb-939e-05fa6e00a508.png?resizew=99)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a26a14475d97f19f8e872ac380993d73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc5cc9f0362e5ca2d13c70146974b4c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5085e3cdef9ea6c564e079f745d6fdb.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/28/81422376-1875-41bb-939e-05fa6e00a508.png?resizew=99)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2023-01-19更新
|
661次组卷
|
3卷引用:福建省宁德市高级中学2023届高三上学期期末模拟数学试题(二)