1 . 已知函数
有两个零点,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/313a8876020169bd7f1bda1148b31ab4.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2 . 已知函数
有且仅有一个零点,则实数
的取值范围为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42fe84ecdcafb66c2e3a4dd702503729.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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3 . 已知函数
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28bd8a100f995d01627c3cb6a2ae8c83.png)
A.![]() ![]() | B.![]() ![]() |
C.![]() | D.直线![]() ![]() |
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4 . 已知函数
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18fda303d541981d7f1231c870e2462b.png)
A.![]() | B.![]() |
C.点![]() ![]() | D.直线![]() ![]() |
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昨日更新
|
43次组卷
|
2卷引用:四川省成都市天府新区太平中学2024届高三数学文科模拟测试(三)
名校
5 . 已知函数
的图象上存在点
,函数
的图象上存在点
,且点
关于原点对称,则实数
的取值范围为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8612dd4d498fe817b246abfb90203f78.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a498dc93f63f98990b8f63990d4fe2e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9f5f4ad0caac5a0fecb64f3908d2290.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
名校
6 . 已知函数
.
(1)
在
的切线斜率为2,求
;
(2)当
时,
①
,证明:
;
②判断
的零点个数,并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf5b31ac045f39b71437e883c580f550.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb45f673c56a289ea78831c9237e8d20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6e2e79843faf62dde86bf858d1e0569.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58196b9e63ec00aa1119052b6de6ae12.png)
②判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
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7 . 给定函数
,则:①当
时,
有极大值
;②当
时,
的解的个数为2个;③若方程
有一个零点,则
;④函数
是R上的单调递减函数,则实数b的取值范围为
.其中正确的结论个数为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc68c31be0ba07c12c812326c0657558.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/639c3d2ff5ee566fcc1b69c65712a661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8508b287da0cbd65cc249fa4bfe4a1c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a3514c6ed74f9d430fb3fff083fa69f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c342d52fc26cc550a45b80756903bee6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e9c6e8adb2580204c195e2321f91895.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce3a34d6f60032718820c3da2b07786b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acdb36dc7d00b35a3cc663ac099cfc39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/783195d5db6bdbfac1409492fecb94b7.png)
A.1 | B.2 | C.3 | D.4 |
您最近一年使用:0次
2024高二下·全国·专题练习
8 . 已知函数
.
(1)当
时,证明:
有且仅有一个零点;
(2)当
时,
恒成立,求
的取值范围;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a4374690fef10696cc075677c724372.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29c7572463225bb3b65cb371f4496440.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
9 . 已知函数
,则下列说法中正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86161d12df385eb4cfec8a8a38277fc2.png)
A.函数![]() ![]() |
B.![]() ![]() |
C.对任意两个正实数![]() ![]() ![]() ![]() |
D.若关于![]() ![]() ![]() ![]() |
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10 . 已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd34ef1116ad10637283e654cacb2b31.png)
,
存在三个零点
,
,
.
(1)求实数
的取值范围;
(2)设
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd34ef1116ad10637283e654cacb2b31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/030b8f88f123418da8427c2c5252a177.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/291c25fc6a69d6d0ccfb8d839b9b4462.png)
(1)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1310a7a80d1f8751a3f8cafe7f8c8b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7803d86067299198e6d14b0c83947f58.png)
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