1 . 已知函数
,若
的图象与
轴有3个不同的交点,则实数
的取值范围是__________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fa3bb77c971beb9a62f166fde545458.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e44d9de2cee26966ad19e87a7d6c85b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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2 . 给定函数
,
,对于
,用
表示
,
中的较小者,记为
,则
的最大值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7343e8f9118952329c5c1072caa9b0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/809a343cb6675bdecdaf348dcdcec099.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d96b743603ab1c10330622f16db78dbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3859cd3de4d6d485df050b0f5321d6c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7ec451b88cfb21d69e12c7fedcd9f8e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3859cd3de4d6d485df050b0f5321d6c6.png)
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2024-06-08更新
|
245次组卷
|
3卷引用:天津市滨海新区大港油田实验中学2023-2024学年高二下学期第二次月考数学试卷
解题方法
3 . 设函数
给出下列四个结论:
①当
时,函数
在
上单调递减;
②若函数
有且仅有两个零点,则
;
③当
时,若存在实数
,使得
,则
的取值范围为
;
④已知点
,函数
的图象上存在两点
,
关于坐标原点
的对称点也在函数
的图象上.若
,则
.
其中所有正确结论的序号是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c437a9cdcfffee24733cd801b35ff78c.png)
①当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd876a2ed79c64bacc3e64b8ee92735e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2372f424431ce7b547a66b7d61d75421.png)
②若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58b140e221ddf537b8964fff8557cca0.png)
③当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f4c78214e43a8b93f2a57072033cbcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aba934874cc9f2ab272fdff67ea23bf6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a13880b9454c5942f164d934b1834783.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/189b2da6c420bf8f8900002d14f65f72.png)
④已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58d85b7336be0bb73ee4a9e70e8b81c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5efaf6b11e250d60433fa93fff030cac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/357e0872d9e98d662a780e7686de86ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c383ed4a2da9ff11a6b284b882b6cae7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf0086b054ef120408acac806a1b1318.png)
其中所有正确结论的序号是
您最近一年使用:0次
2024高三下·全国·专题练习
解题方法
4 . 结合函数的
的图象,写出该函数的一条性质:______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94b9e323d6814d0e4e040f161dc89aba.png)
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2024·全国·模拟预测
5 . 已知函数
,若方程
有7个不同的实数根,则实数
的取值范围是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b49de18996f7bfa04424a34251417af2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24ee772d9cbb66dc987712a395544446.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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2024·全国·模拟预测
6 . 已知函数
则函数
有__________ 个零点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a88d2a826925f79d84c522c01766730e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3adb5f3ee24dcdde27d336bd9cb7d6eb.png)
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2024·全国·模拟预测
7 . 方程
有两个不相等的实数根,则实数
的取值范围为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42e5686e8c304a2a5c6e7eed7543d2d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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2024·全国·模拟预测
解题方法
8 . 已知函数
,若关于
的方程
有3个不相等的实数根,则
的取值范围是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e54dbc81c3d990460bf05a5cf5772e2a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8eb2e46f49adba6036e2624639a1b966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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2024·全国·模拟预测
9 . 已知函数
满足
,且当
时,
,有以下四个结论:①
的值域是
;②
在
上有8个零点;③若方程
有4个不相等的实数根,则这4个实数根之和为12;④若方程
有4个不相等的实数根,则
.所有正确结论的序号是______ .
![](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/389c07d27ee85fc5eb2203cd15710601.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/facd6be947e37552dfa0565d1f21e380.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e11f4ca0e7ace69f92130d0525bcdb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0167434c2c1a16e59e89d436ac0a1278.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/315d0ed88a86c3d57dba2c6df71fc03f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb9c5ed3eedf1de309b17e0a97f3a79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7324fe0f3aa80b29d23fc0207859b90a.png)
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2024·全国·模拟预测
解题方法
10 . 已知函数
,则
与
的图象交点的纵坐标之和为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/055b54f9303da1b646d763431dab1c1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
您最近一年使用:0次