名校
1 . 给出下列说法:①方程
表示的图形是一个点;②命题“若
,则
或
”为真命题;③已知双曲线
的左右焦点分别为
,
,过右焦点
被双曲线截得的弦长为4的直线有3条;④已知椭圆
:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7aea48c44781a844b5c19191f70f61.png)
上有两点
,
,若点
是椭圆
上任意一点,且
,直线
,
的斜率分别为
,
,则
为定值
;⑤已知命题“
,
满足
,
”是真命题,则实数
.其中说法正确的序号是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8223571655fb5d3034461f039087c0e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a618d08d71463522c37df3378d358850.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31be670d32e753012125c503f2f3be56.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1be861d83cddb5fc8aa22f7f0f9415d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4334e343daae170f14d086661bc5792a.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/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7aea48c44781a844b5c19191f70f61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/434249d6640b0c1a712d215cf8b83d5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb57bb18755127be041d346444a4743e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1c24a774a8856f639d45afd85dd85c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aee82283f06cedef32eb15b87964f5d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8cf480a25bd32adfa59f9f0bb7293b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6defc43285a40f7ccb74c1cc04265eba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/423b7ae39db552e60ee8b1d27312306f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b881044b5c73db6fcce110525741b02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91c9bbbe71a1e6aa806b8a109fb52ce0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8123b82eb5957f24c35db521504d67f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54dad48527a47eab4a5916ab0421cc71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5f5d967ad135991b6075ee45df55643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d4cdb5ac461cd9c8c54c9cae6a71b47.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/561800aa679a45da4dbe0e323de1fd59.png)
您最近一年使用:0次
2019-11-21更新
|
657次组卷
|
2卷引用:四川省成都市成华区成都市第四十九中学校2019-2020学年高二上学期期中数学试题
名校
2 . 对于给定的函数
,给出五个命题其中真命题是
①函数
的图象关于原点对称;②函数
在
上具有单调性;③函数
的图象关于
轴对称;④函数
的最大值是0.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53d47acde403253bcb59b1e19e04409f.png)
①函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/730810fb165d70d3aebcabbb0f3662b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4edd62ee96d96fb80e544534d3bdb09.png)
A.①②③ | B.①③④ | C.②③④ | D.①②④ |
您最近一年使用:0次
2019-09-30更新
|
1624次组卷
|
2卷引用:2019年四川省双流中学高三9月月考数学(文)试题
名校
3 . 如图,已知
,其内部有一点
满足
,命题
最大值有可能超过36度;命题
若三边长对应分别为
,则
;则正确的选项为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ab71f0f9086d3745abfe4c16a42beff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7010173da53031a6cf71432406fa5e8d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce20ef9c08e82df8c7f45bac6dd31d36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9c96b857cd8c3389b8d06db32431123.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a99bb77a5ec8629e26b0329a8a21db2.png)
A.![]() ![]() | B.![]() ![]() | C.![]() ![]() | D.![]() ![]() |
您最近一年使用:0次
2014·上海闵行·二模
名校
4 . 对于函数
,有下列4个命题:①任取
,都有
恒成立;②
,对于一切
恒成立;③函数
有3个零点;④对任意
,不等式
恒成立.则其中所有真命题的序号是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9483cdecf2b3ad69dd985b9140154a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5182a8b74c894231021e20380f864fb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59554ee8b854e90a459d27524b5003df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5932ee430d9867cb72cc306b53efd15d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b916c6d3fb2fdc67421489f207c93903.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea2419b1e277ee683ac59e59289109bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/092f763f0747470bfce68e67594a316b.png)
您最近一年使用:0次
2019-12-27更新
|
1185次组卷
|
12卷引用:四川省成都市第七中学2022届高三下学期三诊模拟考试数学(理)试题
四川省成都市第七中学2022届高三下学期三诊模拟考试数学(理)试题(已下线)2014届上海市闵行区高三下学期教育质量调研(二模)文科数学试卷2015届四川省宜宾市高三第一次诊断考试理科数学试卷2015届四川省宜宾市高三第一次诊断考试文科数学试卷2016届江西省临川区一中高三上学期第一次月考理科数学试卷2016届江西省临川区一中高三上学期第一次月考文科数学试卷2017届江西玉山县一中高三上月考二数学(理)试卷(已下线)2018年高考二轮复习测试专项【新课标理科】热点一 分段函数的性质、图象以及应用(已下线)2018年高考二轮复习测试专项【新课标文科】热点一 分段函数的性质、图象以及应用湖北省黄冈市浠水县实验高级中学2019-2020学年高三上学期8月月考数学(理)试题四川省眉山市东坡区眉山北外附属东坡外国语学校2023届高三下学期开学考试理科数学试题宁夏石嘴山市第三中学2017届高三上学期期末数学(理)试题
名校
5 . 已知
为
上的偶函数,当
时,
.对于结论
(1)当
时,
;(2)函数
的零点个数可以为4,5,7;
(3)若
,关于
的方程
有5个不同的实根,则
;
(4)若函数
在区间
上恒为正,则实数
的范围是
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f45afdf4d717bb03adac6b899c367acb.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e541ea2f855f981c96207070683d388.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a72d3f24ff789921509d751b967006a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c322b98669d82733108306842a83a69.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46305fedfb17a208a8b4cab7ebceddfc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccdaf0d40b7153b5084e44b966ecbadf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7aed39f5aca78934fb383402433fe549.png)
(4)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6379419627bb36cc2f289f9b9ef8881.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6c1756b564bf1d998d8179637011c88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f50fea4f0abf56345b563f8ae7fb5416.png)
说法正确的序号是
您最近一年使用:0次
2017-11-18更新
|
1278次组卷
|
2卷引用:四川省成都七中2020届高一上半期期中数学试题