2021高三·全国·专题练习
1 . 设函数
.
(1)讨论
在定义域上的单调性;
(2)当
时,判断
在
,
上的零点个数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4e75cdeefff77a42ab30a8304268af5.png)
(1)讨论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce3a34d6f60032718820c3da2b07786b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ac68a11414c748e67de9f475152bd6b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f0cd4bfd1945c2a5aebda98cfb92be3.png)
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2 . 已知函数
.
(1)列表求函数
的极值;
(2)若关于
的方程
有3个实根,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64d1f6f459292de1002f863203ce91a2.png)
(1)列表求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce90064385c4633056784c1ae375a2d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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3 . 已知函数f(x)=x3﹣3x.
(Ⅰ)求函数f(x)的极值;
(Ⅱ)若关于x的方程f(x)=k有3个实根,求实数k的取值范围.
(Ⅰ)求函数f(x)的极值;
(Ⅱ)若关于x的方程f(x)=k有3个实根,求实数k的取值范围.
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2017-09-11更新
|
1466次组卷
|
2卷引用:]广西钦州市钦州港经济技术开发区中学2017-2018学年高二上学期开学考试数学(文)试题
4 . 已知函数
,
.
(1)选择下列两个条件之一;①
;②
;判断
在区间
是否存在极小值点,并说明理由;(其中
)(注:若两个条件都选择作答,按第一个条件作答内容给分)
(2)已知
,设函数
.若
在区间
上存在零点,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d76c0aa66726a27e427835a4d587808.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7fda90490b6b98cb1f0878b0cace041.png)
(1)选择下列两个条件之一;①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8493a0cd10d3d0399173c04163740a38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf0086b054ef120408acac806a1b1318.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8938db94f49dcbe0c383fba0241bb0da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e25da8298b6a96d627f3e8c990e55f0c.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58b140e221ddf537b8964fff8557cca0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e886497a3d59f3eea0d7e305246e7f84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8938db94f49dcbe0c383fba0241bb0da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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5 . 已知
的两个极值点分别为
和
.
(1)求实数
、
的值;
(2)若方程
在
有两个实根,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88deb283438e42fa6d5356a8ccf039e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4049b329e8cf711663e050e0dc9cdea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7eba583e37243f3ba166bd1c11e58498.png)
(1)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(2)若方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8eb2e46f49adba6036e2624639a1b966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1fce155963060b2e5b9147a185897cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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2021-08-24更新
|
210次组卷
|
2卷引用:贵州省凯里实验高级中学2020-2021学年高二下学期第一次月考数学(文)试题
6 . 已知函数
.
(1)当
时,求曲线
在点
处的切线方程;
(2)讨论
零点的个数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b158e40c2b1839d549c72dab15a74e88.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd876a2ed79c64bacc3e64b8ee92735e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5828873f8369183faf71181cda5b61d2.png)
(2)讨论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
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2021-11-10更新
|
210次组卷
|
5卷引用:河北省2022届高三上学期期中联考数学试题
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7 . 已知函数
,
,若函数
与
的图象有三个不同的交点,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a57dfa44984a9627da4c152a9c953958.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b456d727851d2e69facc358fd556ba2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1938c093dd2fbcb752d0eb7a18d143b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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8 . 已知函数
.
(1)判断
的奇偶性并证明:
(2)设函数
,若
在
上没有零点,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15b3271dc4821a17d85a4057eac853f5.png)
(1)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e11cb0cf56a4c8035638ed110e64ccc4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ab5e0524def52baf53480b8726784ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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9 . 已知函数
,
,曲线
与曲线
在
处的切线互相垂直,记
.
(1)求实数k的值;
(2)若方程
有两个不相等实根,求
的取值范围;
(3)讨论函数
的单调性.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c7ed99a74e126a05cb520f19c094020.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5ee9125eee28d8b2f2e0b91f4446538.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1938c093dd2fbcb752d0eb7a18d143b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e15c2171c1be9ec394494ad822a048d.png)
(1)求实数k的值;
(2)若方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8eb2e46f49adba6036e2624639a1b966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(3)讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46be55c8f2760d6db125f46691a3de48.png)
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11-12高三下·北京·开学考试
10 . 已知函数
,
.
(1)当
时,求曲线
在点
处的切线方程;
(2)当
时,求证:方程
有且仅有一个实数根;
(3)若
时,不等式
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99d395442dc43ce02e2481605ef33f62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24082f2413ad95d1da26e88a3c8c349.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e94f16d5ed858699bfea5039a7bf8ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5828873f8369183faf71181cda5b61d2.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf0086b054ef120408acac806a1b1318.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9587df831df1af5e7dd6be5fdc7bd8ce.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15d300b5fdd8853456650129bc0d8130.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8aa44b1e61b2b56336417e27bc0812d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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