名校
解题方法
1 . 已知函数
.
(1)若
,令
,求
的单调区间;
(2)若
在
上单调递减,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2add071fe0cafc57d0827d209cf5bf18.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/200f24e682c93e02a87f3f9d57dc5d40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c765461ae1a6c70f5cbdcb6c932a22b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d562dc22dfb3b81d0c3f88b54d063c2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
解题方法
2 . 设函数
,若不等式
在
上有解,则实数
的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64ed66251ef2ebb6f8726f66dc23fb5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dc9ede2e55724383dd1093fc7fcdb59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3b2856045b940760ebabe6606df19a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
2017-01-17更新
|
1650次组卷
|
2卷引用:2017届山西临汾一中等五校高三理联考三数学试卷
解题方法
3 . 设函数
,若不等式
有解,则实数
的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efac988e5262bc1cdb4f49a9abbcdae7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6acb0f1ac694dd177e99fc385f23318.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
解题方法
4 . 设函数
,若不等式
有解,则实数a的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c999f54711e077a516149c6cf3a437c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dc9ede2e55724383dd1093fc7fcdb59.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
5 . 已知函数
,
,其中
且
,
为自然常数.
(1)讨论
的单调性和极值;
(2)当
时,求使不等式
恒成立的实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2159221ceb3433461a0fb49747f1af46.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8da208132c56cf53ce7f4d0985582c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10bbdef421c976962a270a2beabbad91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20849c00c47cbdc43f18d53341b6c4e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/041a7c8fc017f596542c5e6ec7d1c40b.png)
(1)讨论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23cee1358737323228d473df162f274e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
解题方法
6 . 设函数
,
表示
的导函数.
(1)求函数
的单调递增区间;
(2)当
为偶数时,若函数
的图象恒在函数
的上方,求实数
的取值范围;
(3)当
为奇数时,设
,数列
的前
项和为
,证明不等式
对一切正整数
均成立,并比较
与
的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d65cc2223ad9962d34105f2a75b756a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a4b04824a308519a61318a82aa97a05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e80063d45a0c9dc6f8c56eba86b23a39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebe96ccf7d78566dead981aa9bf85ceb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0993a7e1439a5dc308c32cbb1b89147.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e835940e4b23dacc4a121b392636da3f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e27168f68700b73325dd152757791d30.png)
您最近一年使用:0次
解题方法
7 . 已知函数
,若对任意两个不等式的正数
,都有
成立,则实数
的取值范围是_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b781531975c931a2bc48082f1d94a51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d98919b1335a8b7ca020636d1494ad0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e019465ca8eaf489cad4fc51f94dbe2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
解题方法
8 . 已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5ea9150353a7b53df03625c48d8327b.png)
(1)当
,求
的单调区间;
(2)
时,求
在区间
上的最小值;
(3)
若
使得
成立,求
的范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5ea9150353a7b53df03625c48d8327b.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d33da711e50e96568facb18cef27165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7754cc9374c8193dadb6875fb8a3fefb.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/369e669ba3c9548cb3027f58d7c8b141.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f85bec096170ffcd5987a0572eb7e4bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2de48324df1370f495b40a39303aaa15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
解题方法
9 . 已知函数
(
)是偶函数,且在区间
上是增函数.
(1)试确定实数
的值;
(2)先判断函数
在区间
上的单调性,并用定义证明你的结论;
(3)关于
的不等式
在
上恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a14d3c31139fb74a36ab922fcec65c6e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24a57996290794e082b21d8f1dfc322a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe86cace140f2c3588ab115837bbfc9e.png)
(1)试确定实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)先判断函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96977a5415357a1b31b00b91b511f884.png)
(3)关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa72dc48dbf85e8df904188a9c496024.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a43b2faa4f81f32d94612dce724e772b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
您最近一年使用:0次
解题方法
10 . 已知函数
(
为自然对数的底数).
(1)讨论函数
的单调性;
(2)若
,函数
在
上为增函数,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ef96ff936eb415b1f8fe6b9166d8e89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ed0b9148a938fe776dc0df6a0d9a8bc.png)
(1)讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa44152b9e517176340ada14c3482ced.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68900dc5b86ef0aab193485eb2c27f1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次