1 . 曲线
上任意一点处的切线斜率的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff2517e58f4258f6f3bde6152cc7b21d.png)
A.3 | B.2 | C.![]() | D.1 |
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6卷引用:江西省江西科技学院附属中学2021-2022学年高二12月月考数学(文)试题
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2 . (1)已知
,
,
都是非负实数,证明:
;
(2)已知
,
,
,
,
,
都是正实数,且满足不等式组:
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47866c0ac2fe4068bda562bb898ee317.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3b507448f5ff8cbed51d7f1b7f2a6bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/299b94d355b2e94f980baf69c4b054ef.png)
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5卷引用:江西省八所重点中学2019-2020学年高三5月联考理科数学试题
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3 . 已知
.
(1)求
的最小值
;
(2)已知
为正数,且
,求证
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c546a7c7f676569ce900731005ffbbb.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3dc08705d52b248ee3e0ab9f4b381158.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd6979fc15213b3b1f507ccfb60d48a2.png)
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6卷引用:江西省宜丰县第二中学2020-2021学年高二下学期第一次月考数学(文)试题
4 . [选修4-5:不等式选讲]
已知
,
,
,且
.
证明:
(1)
;
(2)
.
已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67ca5fd57c2c2fcc3c7a574fdd1467d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cec12441802f71e803efaf2c62ee588.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a57e060f61f7efa54982bda67db483a.png)
证明:
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25f9a67d0c6387f646e9041cc37ef63d.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57887d5ca7cb18189dafae1621fc32c1.png)
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5 . 已知
,函数
.
(1)当
时,求不等式
的解集;
(2)若函数
的最小值为1,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3aa5201a74ed2ce1ff63fe7a573762e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d9261d95f0cc0e01822c7cf6d0ca3b7.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80349a8e0b275b24fd098160d986f60e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/706656ce4b11dda3c212970ab79a3878.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d689b0da0bd4803b3e8a6c69542ae466.png)
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5卷引用:江西省南昌市三校2018-2019学年高二下学期期末数学(文)试题(一中、十中、铁一中)
江西省南昌市三校2018-2019学年高二下学期期末数学(文)试题(一中、十中、铁一中)【市级联考】山东省青岛市2019届高考模拟检测数学理科试题【市级联考】山东省青岛市2019届高三高考模拟检测(二模)数学文科试题广东省汕头市金山中学2019-2020学年高三上学期期中数学(文)试题(已下线)第58讲 不等式的证明(练) — 2022年高考数学一轮复习讲练测(课标全国版)
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6 . 将一个底面半径为
,高为
的圆锥形工件切割成一个圆柱体,能切割出的圆柱最大体积为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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7 . 选修4-5:不等式选讲
已知函数
,
.
(1)当
时,解不等式
;
(2)若对任意实数
,
的最大值恒为
,求证:对任意正数
,当
时,
.
已知函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b32e7a9ea48717373178e33df939854a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e69392d21261afd8e5e5f096634669.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a2a51944c720568f35d443589dfc1aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e799e937076aa5a7dcd51cdc0f40f6b0.png)
(2)若对任意实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d86be2de99fbf7f99cd54ab399146b00.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26d095c073ae38f2ad8a035f78660069.png)
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5卷引用:江西省会昌中学2022届高三(卓越班)上学期第二次半月考数学试题
8 . 选修4-5:不等式选讲
设实数
满足
.
(1)若
,求
的取值范围;
(2)若
,且
,求
的最大值.
设实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/346171d0a0460e5b6627ca462da71402.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85cf3a99ecede8fbd111e1c58a1387f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf04fe8895c10624636a815d3d752975.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/457f50c774979f8b3057303e150fa188.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
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