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1 . 已知函数
(
为自然对数的底数).
(1)讨论函数
的单调性;
(2)求证:当
时,对
,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71df4708b254680f6e4eb99e979c8264.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/041a7c8fc017f596542c5e6ec7d1c40b.png)
(1)讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)求证:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c9277f254e74135faa6ddde3e2b8e35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7364911f4597bfe996da15bf929c7fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5967cc62862986840af4dd29df4bcc41.png)
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2019-05-15更新
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4卷引用:辽宁省沈阳市东北育才学校2019-2020学年高三上学期第三次模拟数学(文)试题
名校
2 . 已知函数
,
.
(1)讨论函数
的单调性;
(2)当
,时,若对于任意
,都存在
,使得
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adb023526bcd23fbd47d6acb5618287c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10bbdef421c976962a270a2beabbad91.png)
(1)讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ce655a13dea9309f8ed84036ba293aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71fbd2ce77a53d084eaeb73c3367c758.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d701701514d29d22d56e8a35f797d267.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a99851fb4df35dfb2c4efd4a839b901f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/616e36f6c0fd32b45060bd291df1498d.png)
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2019-04-29更新
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2卷引用:辽宁省丹东市凤城市第一中学2019-2020学年高三上学期12月月考数学(理)试题
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3 . 已知函数
其中![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71f150d907bae9406ac3920de3be6ded.png)
(Ⅰ)若
,且当
时,
总成立,求实数m的取值范围;
(Ⅱ)若
,
存在两个极值点
,求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6885a7978eb03346e2bd26e655dcb62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71f150d907bae9406ac3920de3be6ded.png)
(Ⅰ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4b3520e95587f35273e8c78886ae745.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6e2e79843faf62dde86bf858d1e0569.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/256f3981024e53f373a80aad40e994ae.png)
(Ⅱ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80c4bbbe3df69cc4571bee158f421e1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32dd5362c87a2a88033067f73ae8ebbd.png)
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2019-04-03更新
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3卷引用:2019届辽宁省大连市第八中学高三5月仿真模拟数学(理)试题
4 . 已知函数
,
.
(1)证明:存在唯一
,使
;
(2)证明:存在唯一
,使
,且对(1)中的
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b0206efa99a2bd4a38e32e87b49ff63.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69b357ceaddccb9ad7eeccc0da0925fa.png)
(1)证明:存在唯一
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d49ec515fb1fdc93ca4dda443326ad5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c36825543013336c9df727bc51ff62c6.png)
(2)证明:存在唯一
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9d9de1d29923aac4f3cecf39ab861a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa4b5d688ceb6f0b9f8b1b3efb04d57e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78070fc2ecb004aaf29c4e99208d3e94.png)
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名校
5 . 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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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
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6 . 已知函数
,曲线
在点
处的切线方程为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5dc02fc8505918d09e7d9f291190cbd4.png)
求a,b的值;
证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/107479b4950e575b440c2f568516a548.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c7028a5fa4d781d382ca3b73b74796e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f6a8fe1c12aacc7396a4b9526671c80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5dc02fc8505918d09e7d9f291190cbd4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4141b26d2c32655003494a91ad6331b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65863c1abad833b79c303bfca24f535c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/626d67ee037054811dbf369dbc1793cf.png)
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2018-05-09更新
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6卷引用:【全国百强校】辽宁省沈阳市东北育才学校2019届高三上学期第一次模拟考试数学(理)试题
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7 . 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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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
8 . 已知函数
(
,且
,
为自然对数的底数).
(1)若曲线
在点
处的切线斜率为0,且
有极小值,求实数
的取值范围;
(2)当
时,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6371836bcbc47109565e246969f4398.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/773ca22fc12ade9e60dbc749ba5cfa73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20849c00c47cbdc43f18d53341b6c4e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/168b3e4b1d6f04226fa2687a72a268b4.png)
(1)若曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2ffeb2e82278491407c85dc15eb7df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48adb8a59b5c02fad5eada1b35171cf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/739b96ec8e004d8eedaba82334e089f5.png)
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2018-06-01更新
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2卷引用:【全国市级联考】辽宁省葫芦岛市2018届高三第二次模拟考试数学(文)试题
解题方法
9 . 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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名校
10 . 设函数
,
(
).
(1)当
时,若函数
与
的图象在
处有相同的切线,求
的值;
(2)当
时,若对任意
和任意
,总存在不相等的正实数
,使得
,求
的最小值;
(3)当
时,设函数
与
的图象交于![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc2313280bd5288132372867fd7e2cef.png)
两点.求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64263fe2ca48e694c87496d61e63fb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab13954c17f2d8fcc2f62389ffe5fe39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c0e9d1ad9561d693958756ee8398218.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15a783088120d67cc98936081e80fb7f.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/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c49be52e64281122e9de94d94974d2a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bbf688ee44585d9d11be06435ab2de5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/164e752e2711294fdaa037aac4620b34.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58a813b77120fbf4dd6a87e393068040.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.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/dc2313280bd5288132372867fd7e2cef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab748045f620a425d340c3ee4b923986.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f40692ad452858824dc511ff1edafa0f.png)
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2018-01-18更新
|
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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(理)试题