1 . 设
,且曲线
在
处的切线与
轴平行.
(1)求
的值,并讨论
的单调性;
(2)证明:当
时,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f0995efedc18428aeb47a8b88acdae9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)证明:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1573b5dcfa2146d52d1b9e90e82adfcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55af79f99268222000b19d7ad43b25dd.png)
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2019-01-30更新
|
639次组卷
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6卷引用:2011—2012学年辽宁省沈阳二中高二下学期期中考试理科数学试卷
名校
2 . 知函数
(
、
为常数),曲线
在点
处的切线方程是
.
(1)求
、
的值
(2)求
的最大值
(3)设
,证明:对任意
,都有
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fdba10ac6c4cd64fc041136922591b0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bea9227dd0104da58e0c40952cc87ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2213e3138553d0cd7c9e3508cba43718.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee03e550e25ea7adbe828abb1ad48923.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eda5537c808ac82f8bd3fe4f31da2c9c.png)
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2019-01-11更新
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581次组卷
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2卷引用:辽宁省营口市开发区第一高级中学2017-2018学年高二下学期6月月考数学(理)试题
名校
3 . 已知函数
,其中a>0.
(Ⅰ)求证:函数f(x)在x=1处的切线经过原点;
(Ⅱ)如果f(x)的极小值为1,求f(x)的解析式.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f51b45c6ae148fd6ee91b3cd79050726.png)
(Ⅰ)求证:函数f(x)在x=1处的切线经过原点;
(Ⅱ)如果f(x)的极小值为1,求f(x)的解析式.
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名校
4 . 已知函数
(
),设
是
的导函数.
(Ⅰ) 求
,并指出函数
(
)的单调性和值域;
(Ⅱ)若
的最小值等于
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/546fd877d7257184e192d36ad6c585cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(Ⅰ) 求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
(Ⅱ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c95b6be4554f03bf496092f1acdfbb89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fb47369d31b4387b52a07c62e62f0ee.png)
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名校
5 . 已知函数f1(x)=
x2,f2(x)=alnx(其中a>0).
(1)求函数f(x)=f1(x)·f2(x)的极值;
(2)若函数g(x)=f1(x)-f2(x)+(a-1)x在区间(
,e)内有两个零点,求正实数a的取值范围;
(3)求证:当x>0时,
.(说明:e是自然对数的底数,e=2.71828…)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
(1)求函数f(x)=f1(x)·f2(x)的极值;
(2)若函数g(x)=f1(x)-f2(x)+(a-1)x在区间(
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed9648f06cf8e7a87e6dd85d71026c0f.png)
(3)求证:当x>0时,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de51e94550c3003a96ce37107fddb22c.png)
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2018-05-21更新
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884次组卷
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4卷引用:【全国百强校】辽宁省葫芦岛市第一高级中学2017-2018学年高二下学期期中考试数学(理)试题
6 . 已知函数
.
(1)当
时,求曲线
在点
处的切线方程;
(2)在(1)的条件下,求证:
;
(3)当
时,求函数
在
上的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae9de719dcc4468ca5b923581a63a0c5.png)
(1)当
![](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/68c6b6a11760d0724b0b60e55970e229.png)
(2)在(1)的条件下,求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/018857ec6e498113b3b12a730d9313da.png)
(3)当
![](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/de19660891d25af49f7a2f64fda5565e.png)
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7 . 函数
,其中
.
(1)试讨论函数
的单调性;
(2)已知当
(其中
是自然对数的底数)时,在
上至少存在一点
,使
成立,求
的取值范围;
(3)求证:当
时,对任意
,
,有
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98e500d1a681cf58ae05809b2a228382.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f4c78214e43a8b93f2a57072033cbcf.png)
(1)试讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)已知当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9610f152110b94e34a69df226e450bad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d218992d1942266d7208e476d0c4100.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/670ab84702aed49e29cefe34e6446f52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c42e44e918ed7156f4fbde6d797e48c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(3)求证:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7aed39f5aca78934fb383402433fe549.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6623246a0aa59ebfd7af375c29dc080.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33bd24e647a626899a243a3f3984f90a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d239d7ef9b36469ec3902d29c58cdb40.png)
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8 . 已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2e26da0e3a3263eb4384ab6cd522ea.png)
(1)若函数(x)在(0,2)上递减,求实数a的取值范围;
(2)设
求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2e26da0e3a3263eb4384ab6cd522ea.png)
(1)若函数(x)在(0,2)上递减,求实数a的取值范围;
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/708b7e04204ad39de8c12436a99ef023.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16708065bed5005518425224af28cdad.png)
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2018-03-22更新
|
421次组卷
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3卷引用:辽宁省沈阳市郊联体2018-2019学年高二下学期期末数学(文)试题
名校
解题方法
9 . 已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c63c80ced1e9b35b12f6121e571286c.png)
(Ⅰ)求
的极值;
(Ⅱ)当
时,设
,求证:曲线
存在两条斜率为
且不重合的切线.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c63c80ced1e9b35b12f6121e571286c.png)
(Ⅰ)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(Ⅱ)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5dd84281f991300118c0c175d97d69f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a1cfb60420ff7e72c1b9d64f69ae063.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acbc6a613224461ade69362d46550474.png)
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2018-05-04更新
|
999次组卷
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4卷引用:辽宁省鞍山市第一中学2018-2019学年高二下学期期中数学(文)试题
解题方法
10 . 已知函数
.
(1)当
,求函数
的单调区间;
(2)若函数
在
上是减函数,求
的最小值;
(3)证明:当
时,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44d4bf57bf0c8e5c18500558c784bc94.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b4d795709b0abcf47bceec2250f2f9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/189b2da6c420bf8f8900002d14f65f72.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)证明:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5033e74441b3f487ed253cd9b9a57e89.png)
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