解题方法
1 . 将边长为2的菱形
沿对角线
折叠成空间四边形,则三棱锥
体积的最大值是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891579e7c231584a8e16b8eeff79888e.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2020-05-26更新
|
337次组卷
|
2卷引用:湖南省名校2018-2019学年高二下学期期末联考数学(理)试题
解题方法
2 . 已知函数
,则
的解集为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c855e61492a2cfe4b32b8c3d938aec5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11a5796e7d3c252d7831b83654b92959.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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3 . 已知函数
.
当
时
①求证:
在区间
上单调递减;
②求函数
在区间
上的值域.
对于任意
,都有
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17b6169ef858bbfd3be89db4a4d0b193.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f753c66e82980ba545b4ae340f45da4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
①求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f30fab115a231d049041d83dac2c7d56.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/517daac9aa260866798457d3018c64bd.png)
②求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/517daac9aa260866798457d3018c64bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60e349d07c0ae25a9d8bd29b3ce9d132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84063dee78582b05c1dda898ae940374.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fd9515b65947c684bbbd203304426dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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4 . 设函数
,若存在区间
,使
在
上的值域为
,则
的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e5e0d46e6d09b66dc59b89ba297f9ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19c29e6517c58917a6b58651a716f18a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f030c36bb8786df88d401792062a4100.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6a74d044a20150362a78457c3e52b79.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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5 . 已知函数
,其中.
(1)试讨论函数
的单调性;
(2)若
,且函数
有两个零点,求实数
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e241741cb9eaa6b129389312eb7f1871.png)
(1)试讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54700061d9f312959c7159c268dede44.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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解题方法
6 . 已知函数
,
,
,若对于任意
,总存在
,使得
成立,则实数
的取值范围为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9eb0ecf11754a78444e26eb7669295f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1376168658dbe7f5b7f4d75fb1db545a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c13b7fbb1dcdac4238553c20073cfe1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f5d499666f20047af33ad30482efd37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07444159fdea87a306d2ea12cd6f027c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c29f5020d133f458912dc3da22b8127d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2020-05-07更新
|
492次组卷
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2卷引用:湖南省衡阳市第八中学2018-2019学年高二下学期第一次月考数学(文)试题
7 . 已知函数
.
(1)讨论
的单调性;
(2)若不等式
在区间
上恒成立,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/681f7405ef5a876b9e7b200a9d3e15ec.png)
(1)讨论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc0922b60446b68f53baee9259415344.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75c3204dcb6b697db534514558111f25.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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8 . 已知函数
.
(1)判断函数
的单调性;
(2)若对任意
时,都有
,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cb659181088ed1b46dbcb35485e50a3.png)
(1)判断函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97148e04ca6a9f9dca0aba91ce4e1d84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8467b178861da640a57a1a3be2c89110.png)
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解题方法
9 . 已知函数
,若
,使得
成立,则实数a的取值范围是______________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b03ffa0a548ca7e580d9f1443a94e80a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fe4886672db7b41d3c63c2bcb972584.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e6c58e0ab6dc645e45af4331667087e.png)
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10 . 已知函数
.
(1)若
使得
成立,试求
的取值范围:
(2)当
在点
处的切线与函数
的图象交于点
时,若
的面积为
,试求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3dc0b6a59985dc9e5deaffb6aa0dd63b.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b87025da788a5e1f009ed0159800e7d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/138f1e6a192aec6a1e80c08a5dfaf35e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/074d6afaec56d00ffd20e5672b32269c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5effc86dd76263c355677af977999830.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee74589d2315942a29327b8397482530.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6765a87bcc2b6d44aabdee9af73e6cd2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc6696ee99cc395a2b72d0bd7017c315.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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