2010·北京朝阳·二模
1 . 函数
的图象大致是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7781531b01205f9717a6399bb23712f5.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2 . 设函数
.
(1)当
时,求函数
的单调区间;
(2)设
为
的导函数,当
时,函数
的图象总在
的图象的上方,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89738302fbf36bbd37bf549b1cdb0214.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ac37a93894473800993362cfd81f6f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0854bffac5ec8bae1576adeb271cebd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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解题方法
3 . 已知函数
.
(Ⅰ)若
,求
在
上的最小值;
(Ⅱ)若
在区间
上的最大值大于零,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cbefdef33174face734249758390671c.png)
(Ⅰ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d188ec2580e273ce87e51653a2177ee.png)
(Ⅱ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ed2f490aac02631c2ed9e6b76354a49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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解题方法
4 . 设函数
与
是定义在同一区间
上的两个函数,如果函数
在区间
上有
个不同的零点,那么称函数
和
在区间
上为“
阶关联函数”.现有如下三组函数:
①
,
;
②
,
; ③
,
.
其中在区间
上是“
阶关联函数”的函数组的序号是___ .(写出所有满足条件的函数组的序号)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4776c85b79df196f606d3ebf3697fbc3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df49341b57eb107f416a014903ce25a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4776c85b79df196f606d3ebf3697fbc3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1be5b3f24056e94e16c9700d72ba2948.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4776c85b79df196f606d3ebf3697fbc3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a18ca67c2770b98f36dbfd802595a95.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40a42d871a87b3070e94abf8b8b7b4b3.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2209baf5fe1309484c2c9f18dd97875d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/914a49b0d7aedc593a3e87fbab7c31ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e980c3a147bdccef4f5165bad2d41c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7294ed75f9d437ffc32235bcb602365c.png)
其中在区间
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f979b19f87f2c7e171d6061d56cb7bf8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
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5 . 已知函数
.
(Ⅰ)当
时,函数
恰有3个零点,求实数
的取值范围;
(Ⅱ)若对任意
,有
恒成立,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20d7f021948c2e3eea9108afe33ccc35.png)
(Ⅰ)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6da577362cb4ba59a02c1a37b169461.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(Ⅱ)若对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f408648547408fab1ec0e703a989baaa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bca88b72ac8dc9c7c137af932de90bc7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2016-12-03更新
|
580次组卷
|
2卷引用:2014-2015学年北京市延庆县高二下学期期末考试理科数学试卷
6 . 设函数
其中
.
①当
时,若
,则
__________;
②若
在
上是单调递增函数,则
的取值范围________.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ff673db8d7f0777534d9445de2c97cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f68a1147fd7289d45ecd47bb0b42707d.png)
①当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b4d795709b0abcf47bceec2250f2f9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3047d4ab078dafc06c047bcbf0a6ffaf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec0618ae3a4fde6d6220010af229b9a.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://img.xkw.com/dksih/QBM/2016/3/4/1572518468640768/1572518474416128/STEM/9e67c66ecaed43d39ee362226cad48ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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解题方法
7 . 某人销售某种商品,发现每日的销售量y(单位:kg)与销售价格x(单位:元/kg)满足关系式
,其中a为常数.已知销售价格为8元/kg时,该日的销售量是80kg.
(1)求a的值;
(2)若该商品成本为6元/kg,求商品销售价格x为何值时,每日销售该商品所获得的利润最大.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c35d1de82dd7fb0c540d05135762e199.png)
(1)求a的值;
(2)若该商品成本为6元/kg,求商品销售价格x为何值时,每日销售该商品所获得的利润最大.
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11-12高二下·北京西城·期末
8 . 已知函数
在区间
上存在零点,那么实数a的取值范围是_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/011cda65b8dfb04f6e8e30f7aeb10eed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ead3fdcb8fe8f5eb3dbe7d96cabc28b.png)
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9 . 已知函数
.
(1)求函数
的极小值;
(2)如果直线
与函数
的图象无交点,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/128aa58d4cfc0ac1bdd65c4e281288ac.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)如果直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/188240a60b122dc614ba093a75c8aa0a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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10 . 已知函数
,
为其导函数,且
时
有极小值
.
(Ⅰ)求
的单调递减区间;
(Ⅱ)若不等式
(为正整数)对任意正实数恒成立,求的最大值.(解答过程可参考使用以下数据:
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe6bc20dd0a726052e95fad449632c1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a20f241fe608738e3a29b43a4c55421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e55aa0a20848c37c1892c567b2315e04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82fda8d1d314c3aff1e88a647a3b6295.png)
(Ⅰ)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(Ⅱ)若不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db23a735bb4518b145ccadf32eb2f123.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cd1e1ed05032b23fdce572af4d8f567.png)
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