1 . 已知函数
.
(1)讨论
的单调性.
(2)若
存在两个零点
,且曲线
在
和
处的切线交于点
.
①求实数
的取值范围;
②证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81f642b7715a574bf5b8e3f0ba107110.png)
(1)讨论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9df2062940530232ab124a571e951ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fb652143b43cc9439a347b2b1dc5cf6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23b4f86e48e2b0d63c1865c60ed1e4d1.png)
①求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
②证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31cdc61764eef3fbe2dc5fafaa2efb39.png)
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2023-05-05更新
|
977次组卷
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8卷引用:四川省乐山市沫若中学2021-2022学年高二下学期第二次月考数学(文)试题
解题方法
2 . 已知函数
.
(1)求函数
的最大值;
(2)斜率为k的直线与曲线
交于
,
两点,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ceb3fc80072b6bb97249515ae483bef.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)斜率为k的直线与曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20d0c99ddd028f0bc3b1d64924ff0f61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12a3efb79f35db8448f3391252ab7d4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ad9a4881ebe1a4a566d0fab96d71baa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/097e8d8b72a1988e98cef3e609519f71.png)
您最近一年使用:0次
解题方法
3 . 若函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c862a0de797b7fce2c28ea413d6895aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c90282d4a37c9a20620d4bbb0c263cae.png)
(1)证明:当
时
;
(2)设
,证明![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bfcb6519abcd3dfea058a7d3629b999.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c862a0de797b7fce2c28ea413d6895aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c90282d4a37c9a20620d4bbb0c263cae.png)
(1)证明:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0070711ccd16ed13ad5132fbb11d6485.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/930bc56406e69b785b37a83d48e36724.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bfcb6519abcd3dfea058a7d3629b999.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c90282d4a37c9a20620d4bbb0c263cae.png)
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4 . 已知函数
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22dd8b3dc4c609bab82d356a5cc2208d.png)
(1)讨论函数
的单调性;
(2)若
恒成立,
①求a的取值范围;
②设
,证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a72d15c3f47f19ef0d28147fc264a70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22dd8b3dc4c609bab82d356a5cc2208d.png)
(1)讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e9c599e8d420006448905acec2b8234.png)
①求a的取值范围;
②设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f093c61867ee4ce75f951d46b9b123.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d034b5ac409e0f1d384f7007853619c.png)
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5 . 已知函数
.
(1)设
,试讨论
的单调性;
(2)斜率为
的直线与曲线
交于
两点,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8d2af0d702d81d8a5cef243da7c6060.png)
(1)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e192f32196fca909580a148b03068ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46be55c8f2760d6db125f46691a3de48.png)
(2)斜率为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20d0c99ddd028f0bc3b1d64924ff0f61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35115e581c859d8fd22653883ebd35ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/097e8d8b72a1988e98cef3e609519f71.png)
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2022-07-07更新
|
264次组卷
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2卷引用:四川省乐山市2021-2022学年高二下学期期末考试数学(理)试题
6 . 设抛物线
的焦点为
,过焦点
作直线
交抛物线
于
,
两点.
(1)若
,求直线
的方程;
(2)若点
的坐标为
,直线
,
分别与抛物线
的准线相交于
,
两点,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bb4dd4670828f75bc573b52cdd02e1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f043398f41cb7c3a499262c8da51b6da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5265d99095b635f62c7915298ec0e963.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74e0212491e4b2d7525de9a87fab3a6d.png)
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2021-11-21更新
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313次组卷
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2卷引用:四川省乐山市市中区海棠实验中学2023届高三上学期第一次月考数学(文科)模拟试题
7 . 已知函数
.
(1)求
的单调区间;
(2)证明:当
时,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fc8e78580f574f2c2699181f7150ef5.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)证明:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/331ed51ff1e1d91ee693ae74f45a38a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1dff54c7b657b718b618266ec5bb0a5.png)
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2022-05-10更新
|
1545次组卷
|
4卷引用:四川省乐山市2022届高三下学期第三次调查研究考试数学(文)试题
四川省乐山市2022届高三下学期第三次调查研究考试数学(文)试题四川省眉山市2022届高中第三次诊断性考试数学(文史类)试题(已下线)专题08 证明不等式-2021-2022学年高二数学下学期期末必考题型归纳及过关测试(人教A版2019)(已下线)专题9 函数与导数 第4讲 导数与不等式
名校
8 . 已知函数
,
,其中
.
(1)试讨论函数
的单调性;
(2)若
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31b4bf28a8821e3b58f01ebc5ed3495a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76b6b8978f5c0b8cfa35fd6ebfc17706.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22dd8b3dc4c609bab82d356a5cc2208d.png)
(1)试讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62eee9179d83e218ec3aa0e94075494c.png)
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2022-01-03更新
|
1685次组卷
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9卷引用:四川省乐山市高中2022届第一次调查研究考试数学(文)试题
四川省乐山市高中2022届第一次调查研究考试数学(文)试题(已下线)第02讲 一元函数的导数及其应用-【寒假自学课】2022年高二数学寒假精品课(人教A版2019选择性必修第二册)(已下线)专题3-2 含参讨论-2022年高考数学毕业班二轮热点题型归纳与变式演练(全国通用)广西名校2022届高三第一次联合考试数学(文)试题广西名校2022届高三第一次联合考试数学(理)试题内蒙古乌兰察布市2021-2022学年高二上学期期末考试数学(文)试题四川省巴中市通江县通江中学2021-2022学年高二下学期3月月考数学(文科)试题山西省太原市2022届高三二模数学(文)试题云南民族大学附属中学2022届高三高考押题卷二数学(理)试题
9 . 已知椭圆
,点
在
上,
,且![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8feee30fadc432deace534d528feb16b.png)
(1)求出直线
所过定点
的坐标;(不需要证明)
(2)过A点作
的垂线,垂足为
,是否存在点
,使得
为定值?若存在,求出
的值;若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2242ca20bd7ab3d41b128e10a4071521.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c179fe7eff7abfdd092b63c9c1b82d0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8feee30fadc432deace534d528feb16b.png)
(1)求出直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
(2)过A点作
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4110cc2b5dc3aabd585a8e9a81855a12.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4110cc2b5dc3aabd585a8e9a81855a12.png)
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2022-01-26更新
|
476次组卷
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2卷引用:四川省乐山市2021-2022学年高二上学期期末数学文科试题
10 . 已知函数
,
,其中
.
(1)试讨论函数
的单调性;
(2)若
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c73cf0d3363268899ede79d3058c1c88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a9d17b6a2de3201d4bcb59d860dd492.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10bbdef421c976962a270a2beabbad91.png)
(1)试讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95acd9306fd1aaf3c13131533d1bc54a.png)
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2022-01-03更新
|
963次组卷
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5卷引用:四川省乐山市高中2022届第一次调查研究考试数学(理)试题
四川省乐山市高中2022届第一次调查研究考试数学(理)试题(已下线)专题3-7 导数压轴大题归类:不等式证明归类(2)-2022年高考数学毕业班二轮热点题型归纳与变式演练(全国通用)(已下线)专题3-2 含参讨论-2022年高考数学毕业班二轮热点题型归纳与变式演练(全国通用)陕西省渭南市白水县2021-2022学年高二下学期期末理科数学试题(已下线)专题2-4 导数证明不等式归类(讲+练)-1