1 . 已知函数
的极小值为
.
(1)求实数
的值;
(2)若过点
的直线
与曲线
相切,求直线
的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbbd2907a02d06daaebbab7b3206048b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c95b6be4554f03bf496092f1acdfbb89.png)
(1)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c94667eced18149cb1aee79d0356874.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
您最近一年使用:0次
2022-06-30更新
|
287次组卷
|
2卷引用:江西省九江“六校”2021-2022学年高二下学期期末联考数学(文)试题
解题方法
2 . 已知函数
,则“
在
上有极值”是“
”的( )条件.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/983d9afc9b7aae30361b4e5938ae5617.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ab5e0524def52baf53480b8726784ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb5f421939ee855f25927e7570d82c71.png)
A.充分不必要 | B.必要不充分 | C.充要 | D.既不充分也不必要 |
您最近一年使用:0次
2020-09-29更新
|
198次组卷
|
3卷引用:江西省九江市修水县2018-2019学年度高二下学期数学(文科)期末试题
江西省九江市修水县2018-2019学年度高二下学期数学(文科)期末试题(已下线)河南省实验中学2023-2024学年高三上学期第一次月考数学试题变式题1-5 广西桂林市田家炳中学2023-2024学年高二下学期期中测试数学试题
解题方法
3 . 已知函数
(
).
(Ⅰ)若
在
处的切线过点
,求
的值;
(Ⅱ)若
恰有两个极值点
,
(
).
(ⅰ)求
的取值范围;
(ⅱ)求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a97285a2fcf8561a6ef2800275a8dbc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10bbdef421c976962a270a2beabbad91.png)
(Ⅰ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5da7544af9e0d48ac4a99c8d5290f789.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(Ⅱ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.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/26d8dafc71b106f39f4e15442220897b.png)
(ⅰ)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(ⅱ)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2971a80a6b4241aedbcfba18a6d3c485.png)
您最近一年使用:0次
10-11高三上·福建厦门·阶段练习
4 . 已知函数![](https://img.xkw.com/dksih/QBM/2011/2/18/1569997731446784/1569997736804352/STEM/794ab03e2ac141c9a7b6103149b4cfde.png?resizew=92)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e45bcd8f6ede8cc2513ad41402f40086.png)
(1)若函数在区间
上存在极值,其中a >0,求实数a的取值范围;
(2)如果当
时,不等式
恒成立,求实数k的取值范围;
(3)求证:
.
![](https://img.xkw.com/dksih/QBM/2011/2/18/1569997731446784/1569997736804352/STEM/794ab03e2ac141c9a7b6103149b4cfde.png?resizew=92)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e45bcd8f6ede8cc2513ad41402f40086.png)
(1)若函数在区间
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/124b108c5e6819a4b58b7362d5c30073.png)
(2)如果当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2fb40a36a293471742ce75f6b9635b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bf0aab66798e1f60dc23c693c14e5a0.png)
(3)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00e1068781bc47422019aa28f40dba79.png)
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