1 . 若函数
在
上存在两个零点,则a的取值范围是 ( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c22aea3a1562eda04ef0eb639b678800.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66202b4b70b33f1b35711eed981f1f1c.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2023-05-25更新
|
594次组卷
|
3卷引用:四川省广元市宝轮中学2023届高三仿真考试(二)数学(理)试题
解题方法
2 . 已知抛物线
的焦点为
.
(1)若点
到抛物线准线的距离是它到焦点距离的
倍,求抛物线的方程;
(2)点
,若线段
的中垂线交抛物线于
,
两点,求三角形
面积的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3764ba3aa0a241787f4661026bb14053.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
(1)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef27f004734fa3f592b95915dba2a29b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
(2)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef27f004734fa3f592b95915dba2a29b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20af148464904e21f4374cc8fb886fba.png)
您最近一年使用:0次
3 . 已知函数
.
(1)函数
,讨论
的单调性;
(2)函数
(
)的图象在点
处的切线为
,证明:有且只有两个点
使得直线
与函数
的图象也相切.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdc873fc03e6e4d3c4ba02f8b1147b20.png)
(1)函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22c2c1a93a00edf7dc4b100b1c01e426.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6cc4a85bbf152031dc8ebd182e44ead.png)
(2)函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eda16bdd2671a8e299a0d9c00504202d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
您最近一年使用:0次
2020-06-14更新
|
239次组卷
|
2卷引用:四川省广元市高2020届第三次高考适应性统考数学(文科)试题
解题方法
4 . 已知函数
在其定义域内有两个不同的极值点.
(1)求
的取值范围;
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e74aa9443795cd63d27907b7d1a6eb05.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8fb3efc3f04c49387ceae2d54e6b87b.png)
您最近一年使用:0次
2018-01-12更新
|
865次组卷
|
3卷引用:四川省广元市2018届高三第一次高考适应性统考(文科)数学试题
解题方法
5 . 已知函数
,射线
,若射线
恒在函数
图象的下方,则整数
的最大值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d2e353c27f9db2aac063da0a070ab3f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bc86ae882762f71270c512423bb4d3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
A.4 | B.5 | C.6 | D.7 |
您最近一年使用:0次
名校
6 . 已知函数
,对任意
,存在
,使得
,则
的最小值 为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c8e735a438f56825d9b4c63225c5cba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e69392d21261afd8e5e5f096634669.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72a8f4f4b9a63a58c3a4b53bd5b770d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99fea55f7dd0ee1106c8390669fee73c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13502d46b8563c54c09b29b20b3006a4.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2016-12-04更新
|
890次组卷
|
6卷引用:四川省广元市2018届高三第一次高考适应性统考理科数学试题