名校
1 . 已知
,则
的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c361c6f6312b571e703951d9a30e251.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b5cc842d7359cfc2c2493e603d63b75.png)
A.4 | B.6 | C.8 | D.2 |
您最近一年使用:0次
2024-04-02更新
|
291次组卷
|
2卷引用:湖南省多校联考2023-2024学年高一下学期入学考试数学试题
解题方法
2 . 已知椭圆
的左,右焦点分别为
,
,点P是椭圆C上的任意一点,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77a9859040e01b972363d182a9e8b68f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
A.![]() | B.![]() ![]() |
C.![]() | D.![]() |
您最近一年使用:0次
名校
3 . 已知
,
,直线
,
,且
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67ca5fd57c2c2fcc3c7a574fdd1467d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73fb6910119178298e5659f3e4b865b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2d42669e9b63ec3d43938273453d26b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ce08b357f11ef44c3e8207ac574422a.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
名校
解题方法
4 . 已知
分别为椭圆
的两个焦点,
为椭圆上一点,则
的最大值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40f98254a6193566587a70c7d95fdabf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/279cefeb5c389a37a71e5fd3925f5954.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b2e584d976bce474f7efd37aa8f27fb.png)
A.20 | B.16 | C.64 | D.24 |
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名校
解题方法
5 . 已知正数
,
满足
,则下列选项正确的是( )
![](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/b45900deae0489e87fe448948e8091c4.png)
A.![]() ![]() | B.![]() ![]() |
C.![]() ![]() | D.![]() ![]() |
您最近一年使用:0次
名校
解题方法
6 . 已知正实数
,
,
满足
.
(1)若
,证明:
.
(2)求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71dd40d3df2762d6e6bdefcb5f397269.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e370bb90fbd819d76b005145819a8838.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0818daf1a57c4b4c3666d411dcc76f8a.png)
您最近一年使用:0次
2024-03-08更新
|
252次组卷
|
3卷引用:四川省雅安市雅安中学等校联考2023-2024学年高三下学期开学考试数学(文)试题
解题方法
7 . (1)已知
,
,且
,求
的最大值;
(2)已知正数
,
满足
,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67ca5fd57c2c2fcc3c7a574fdd1467d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/536178538dd8176b8743e3ceb94523a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18f0281e6bbdbe08beeccb55adf84536.png)
(2)已知正数
![](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/f6ec15c2be441b5ccdee4e40537c4c7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc6f3c30a6691c86db14441bd51d777d.png)
您最近一年使用:0次
2024-03-07更新
|
308次组卷
|
3卷引用:四川省眉山市东坡区冠城七中实验学校2023-2024学年高一下学期开学数学试题
解题方法
8 . 若正实数
,
满足
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/254aebe3ef7eabdf41e46c1cd857c705.png)
A.![]() | B.![]() ![]() |
C.![]() | D.![]() ![]() |
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2024-03-06更新
|
444次组卷
|
2卷引用:海南省定安县定安中学2023-2024学年高一下学期开学考试数学试题
名校
解题方法
9 . 若正实数
满足
,则下列选项中正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5be97cd1c7111b654d87d8fbb63b6a84.png)
A.![]() ![]() |
B.![]() |
C.![]() |
D.![]() ![]() |
您最近一年使用:0次
2024-03-06更新
|
454次组卷
|
3卷引用:安徽省宿州市泗县第一中学2023-2024学年高一下学期开学适应性训练数学试题
10 . 已知正数a,b满足
则ab的值可能为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0670f49cd801bfc78ecb4b6af8db21b4.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次