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1 . 已知函数
.
求
的单调区间;
Ⅱ
证明:
其中e是自然对数的底数,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4112bc7b35101c74442bdecdec580c5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4141b26d2c32655003494a91ad6331b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d479a86a1711709b2d100fe4daf3e7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11d71379442f28c038d367d49422cf90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/987517758fad59f6f695761deb2a5ebd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e86c3d9a86ec4798af6a52af6057ce4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0311e8fea14a1cbe2c89b30a9cfbc62.png)
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2018-12-10更新
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2卷引用:【全国百强校】重庆市重庆第一中学2019届高三(上)期中数学试卷(文科)
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2 . 已知函数
.
(1)求
的单调区间;
(2)若
,证明:
(其中
是自然对数的底数,
).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6da1cf990b217e4673bb294989b1aec7.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1fe2115d883d13561e28006d3f6143b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb788e9c92435bf2484a947180d5815d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/168b3e4b1d6f04226fa2687a72a268b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d218992d1942266d7208e476d0c4100.png)
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2018-11-30更新
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3卷引用:【全国百强校】重庆市第一中学2019届高三上学期期中考试数学(理)试题
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3 . 已知函数
,
,若两曲线
,
有公共点,且在该点处它们的切线相同,则当
时,
的最大值为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c3148a638ece211d9e555d3ac77a994.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad5975491ab8f7399b095cdefeb13661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a1cfb60420ff7e72c1b9d64f69ae063.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec9fe460a22c930ef96f84cb21cfd5e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2018-10-29更新
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4卷引用:重庆市乌江新高考协作体2023-2024学年高二下学期5月期中考试数学试题
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4 . 设
,若函数
恰有3个零点,则实数
的取值范围为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dcbc4f794f967e4b436ca674c37baf2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/142d40654768ee1f124793fcf03dca29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2018-08-29更新
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1849次组卷
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5卷引用:重庆市万州龙驹中学2018-2019学年高二下学期期中(理)数学试题
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解题方法
5 . 已知函数
.
(1)当
时,求曲线
在点
处的切线方程;
(2)若函数
有两个极值点
,且
.
①求
的取值范围;
②求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b0abf9e3e11d3a9813977a7f91398fc.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fcaaec3edd0edfa39468f60dc522cd1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89f4eff3125c5e63a994ba1ad5be58e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3907da01aa2971e05262ecf58bafe27d.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/694c99143dcd6fdc8138efa03d0c3350.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/223f8ddc0c1bb794e4c4a948912e289f.png)
①求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15befbdad977723a86194979c675ee5d.png)
②求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fade07c8b069a453b08c1e6c3b9ef896.png)
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解题方法
6 . 已知函数
对任意
都存在
使得
则
的最大值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ffc20960b4591e658945c98dcb8b42e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c6119e63086ac21f64c7dac6c1c0675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1361a3f3fdc9161192d7ccfc2befe726.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2592e890701edbcf19205eebd109361.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e86e6f0ac5903369afea2c8d04ba412.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2018-06-01更新
|
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2卷引用:重庆市重庆一中2017-2018学年高二下学期期中考试数学(理)试题
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7 . 锐角
中,
为角
所对的边,若
,则
的取值范围为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a6e2948f17dc94a1af0648c14d01809.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6402f1010e94be78552ed4c45548b1b8.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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8 . 已知函数
若对区间
内的任意实数
,都有
,则实数
的取值范围是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bb647ba17894a13db8c35291bf92cef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5e7e05d1e0310f00c5dc79864f7b2c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad7169ce3255d2a02a20aa5932d2bd48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1cceb83d73cb98f4bc223d3901f9a90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2018-04-26更新
|
762次组卷
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8卷引用:【全国百强校】重庆市第一中学2018-2019学年高二下学期期中考试数学(理)试题
【全国百强校】重庆市第一中学2018-2019学年高二下学期期中考试数学(理)试题安徽省江南十校2018届高三3月联考数学(理)试题(已下线)2018高三二轮复习之测试专项【新课标版文科数学】 方法七 “六招”秒杀选择题——快得分(已下线)2018高三二轮复习之测试专项【新课标版理科数学】 方法七 “六招”秒杀选择题——快得分四川省攀枝花市2018届高三第三次(4月)统考数学理试题【全国百强校】东北师大附中2018届四模——理科数学试题2019届辽宁省大连市第八中学高三第一次模拟考试数学(理)试题黑龙江省佳木斯市第八中学2021-2022学年高三上学期期末数学(理)试题
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解题方法
9 . 已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7760f8ecf2df099530acc3a868f2473d.png)
(1)求函数
的最大值;
(2)对于任意
,且
,是否存在实数
使得
恒为正数?若存在,求
的取值范围,若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7760f8ecf2df099530acc3a868f2473d.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbbac7357513afd7cd11ecb82d3ec3f0.png)
(2)对于任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0c220c24b7ebcea98a66ef5ed9a52d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4da2a14975249f4fc8dfcc9652bbb672.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/879dc339eaa4e144907c01356d167796.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
2018-04-26更新
|
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2卷引用:重庆市第三十中学2018-2019学年高二下学期期中(理)数学试题
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10 . 已知函数
.
(Ⅰ)若
在
上单调递减,求
的取值范围;
(Ⅱ)当
时,函数
有两个极值点
,
证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53a08c4201ec98d78c2c8f8d092a2adb.png)
(Ⅰ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8938db94f49dcbe0c383fba0241bb0da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(Ⅱ)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7326ea56be82bd616fec7e6aa3c884c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e409849c921f4868c5a78abffb9f74bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8dae74c724114bfeff024dd7b79f5edc.png)
证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03ca13a93b5f401c0d39ba52b0cffcb0.png)
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2018-04-26更新
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2卷引用:重庆市永川北山中学校2019届高三上学期期中数学试题