已知函数
,
.
(1)若直线
是曲线
的一条切线,求a的值;
(2)判断函数
的零点个数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22ecb0bd4b8ccd15cebb8fd9110ab9f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10bbdef421c976962a270a2beabbad91.png)
(1)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2a7df955fc17e92fd86302f8c34664a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
(2)判断函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
2023·全国·模拟预测 查看更多[1]
(已下线)2023年普通高等学校招生全国统一考试数学预测卷(四)
更新时间:2023-02-17 19:36:15
|
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解答题-证明题
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较难
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【推荐1】已知函数
的图象在定义域(0,+∞)上连续不断,若存在常数T>0,使得对于任意的x>0,
恒成立,称函数
满足性质P(T).
(1)若
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,求
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(2)若
,试说明至少存在两个不等的正数T1、T2,同时使得函数
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(3)若函数
满足性质P(T),求证:函数
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2a2c48c3896c9f07bc82434e30020fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/196be101149acfb6a6c4ceca7fc96828.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b2cb4e04d259f4f28a5ab1b31f7c966.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/842d905700b5635303a740bd0109ff0a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(3)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
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解答题-证明题
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解题方法
【推荐2】.已知函数
的极大值点为
.
(1)用实数a来表示实数b,并求a的取值范围;
(2)当
时,
的最小值为
,求a的值;
(3)设
,
两点的连线斜率为k.求证:必存在
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9a6fa02d56e7338c83cf1ae518e3ebe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99c6875d552e9fff3c7d655f3a59b166.png)
(1)用实数a来表示实数b,并求a的取值范围;
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6070f2ee5e48cce77eb4a2cb9f11ccfb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/459c84c9addfbd1cdd0a877ba7c584e4.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24f5e21076f4f188625d0f69e765c958.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
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名校
解题方法
【推荐1】已知曲线
在
处的切线方程为
.
(1)求
的值;
(2)已知
为整数,关于
的不等式
在
时恒成立,求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd79039ea7622201994bf260277595d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb45f673c56a289ea78831c9237e8d20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5139a71c41789f3c5ab3c0207d7b7522.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/280860dd039e1305a5ccc455f63e8223.png)
(2)已知
![](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/8df5112ea17a5aac234563e0fd047be1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fde64f4d3c38e43fbdee24eadc4b0dd.png)
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较难
(0.4)
名校
【推荐2】已知函数
,
是
的导数,且
.
(1)求a的值,并判断
在(0,+∞)上的单调性;
(2)判断函数
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/172e96945808dc911a604f04ab8cdd80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a4b04824a308519a61318a82aa97a05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1ea743eb9d39671af570b886b0c8149.png)
(1)求a的值,并判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)判断函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
您最近一年使用:0次
解答题-证明题
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【推荐1】已知函数
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(1)若函数
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(1)若函数
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57b5bf5b2aa779fad4de6bd21c5c87f7.png)
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解答题-问答题
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较难
(0.4)
名校
【推荐2】已知函数
,
(1)讨论函数
的单调性;
(2)给出如下定义:对于函数
图象上任意不同的两点
,
,如果对于函数
图象上的点
(其中
)总能使得
成立,则称函数具备性质“
”.试判断函数
是不是具备性质“
”,并说明理由
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ba790bfc7240d9f86fea1f9367a4cc9.png)
(1)讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)给出如下定义:对于函数
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