名校
1 . 已知函数
,
,
,函数
,若方程
有四个不同的解,则实数
的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4145378eae871a1b2ff21962ab7d8e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35049d9a704927b5896c706c07b00bf4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66f5ed72f10fcbe1dc8f8d933209ba77.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/713d2bb1b45883d6ee3dde5aa62d5454.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/939d993133e9fb2f42a9fd36699f1f63.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2024-05-08更新
|
194次组卷
|
2卷引用:北京市朝阳区对外经贸大学附属中学2023-2024学年高二下学期期中质量监测数学试卷
2 . 已知函数
,其中
.
(1)当
时,求
的极值;
(2)讨论当
时函数
的单调性;
(3)若函数
有两个不同的零点
、
,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/971822ac7125bb76d66139083584263f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10bbdef421c976962a270a2beabbad91.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b108ab31cc093f03cf48ad65429889e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)讨论当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
(3)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8145758226601870f0366210b150e047.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
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|
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4卷引用:北京市中国人民大学附属中学2023-2024学年高二下学期期中考试数学试题
3 . 设
,函数
,当
时,
的值域是______ ;若
恰有一个零点,则
的取值范围是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33f306d2b261f4c39a9fc0858d96e647.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93955c5a47d255c0990f336a5fc2779b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/239ea0e903fbb4c8ce04133b9969578c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
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名校
4 . 已知
,函数
,若存在三个互不相等的实数
,使得
成立,则a的取值范围是_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22dd8b3dc4c609bab82d356a5cc2208d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4839ac6dc86dd36b5e8c170902507c53.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05b8ec9d4206ea66a02de5c4a1e1e911.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5832a3ab995f6389801f51945dd9d348.png)
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2023-09-01更新
|
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5 . 已知函数
,当
时,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/253a1f84cbb9f46097db4a4d309e7a8a.png)
______ ;若函数
有三个零点,则实数
的取值范围是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dab1b114cf60480cd4a34648a63960d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/253a1f84cbb9f46097db4a4d309e7a8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0384a0466920e5bf00231a5c5bf77969.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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2023高三·全国·专题练习
名校
解题方法
6 . 已知定义在R上的函数
满足
,当
时,
,函数
,若函数
在区间
上恰有8个零点,则a的取值范围为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e298fe246eef819dd9b1edabe3bb9cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1591d4244dcf5539a4ae98f554e91e61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b1c079afd1b058adc67a50f48f3d466.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a7ab444a83cb2bf57de50c07710c8da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cffa662f0273f0921c1fa4727f632395.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e71dbce0ccda0f5df7d0555fa23bf770.png)
A.(2,4) | B.(2,5) | C.(1,5) | D.(1,4) |
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|
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|
7卷引用:北京市第八十中学2023届高三上学期开学考试数学试题
名校
解题方法
7 . 已知函数
.
(1)当
时,解不等式
;
(2)若函数
有且只有一个零点,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab07e09bef934df5b06e09fbdda00f60.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d8f8c99ed4f1fbbb17b36ed96bbcb98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9cbfbe6ea4ccb03bcc6c8cb0bd025a5.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4aefb9a6546fda57cbea1e02d4cbead.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9faeed172ec5b88966b0d1c52748d41.png)
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名校
8 . 已知函数
,则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/199ff08965a12dc911f31b3b2a975292.png)
A.![]() ![]() |
B.函数![]() ![]() |
C.函数![]() ![]() |
D.函数![]() ![]() ![]() |
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名校
9 . 已知函数
是定义域为R的偶函数,当
时,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46a0e4e191318acb6fba2883ebcfffc5.png)
,若关于x的方程
有且仅有7个不同实数根,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/892560dcff6af9f66a3f735652f69dd7.png)
___________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6e2e79843faf62dde86bf858d1e0569.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46a0e4e191318acb6fba2883ebcfffc5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31f2b651541a4f01ef4cf12486d44211.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec8d420937ede6dd195aa2e42f1fbd53.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/892560dcff6af9f66a3f735652f69dd7.png)
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2021-12-02更新
|
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|
3卷引用:北京市中关村中学2023届高三三模数学练习试题
名校
解题方法
10 . 已知函数
,若对于任意正数
,关于
的方程
都恰有两个不相等的实数根,则满足条件的实数
的个数为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14d2ce7993f79a46ac380feda9215e7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb101c5df08aa35ae24a6416840b199b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.![]() | B.![]() | C.![]() | D.无数 |
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2021-05-06更新
|
1976次组卷
|
9卷引用:北京市海淀区2021届高三二模数学试题