已知函数
.
(1)若
为
的一个极值点,求实数a的值并此函数的极值;
(2)若
恰有两个零点,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c180f0daa6ead459e3a746d1f40e55b.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb45f673c56a289ea78831c9237e8d20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
22-23高二下·重庆沙坪坝·开学考试 查看更多[5]
重庆市南开中学校2022-2023学年高二下学期开学考试数学试题新疆泽普县第二中学2022-2023学年高二下学期第一次月考数学试题(已下线)湖南省株洲市2023届高三下学期一模数学试题变式题17-22河南省安阳市文峰区安阳市第一中学2022-2023学年高二下学期3月月考数学试题(已下线)拓展九:利用导数研究函数的零点的4种考法总结(1)
更新时间:2023-02-13 11:03:36
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解答题-问答题
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适中
(0.65)
【推荐1】已知函数
在
处取得极值,且在点
处的切线的斜率为2.
(1)求a、b的值;
(2)求函数
的单调区间和极值;
(3)若关于x的方程
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上恰有两个不相等的实数根,求实数m的取值范围.
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(1)求a、b的值;
(2)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
(3)若关于x的方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55a822396334a15fa9b8fff707e50955.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b448fe164c2c2931805e3b3847dcdd75.png)
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适中
(0.65)
名校
【推荐2】已知函数
.
(1)求曲线
在点
处的切线方程;
(2)求函数
的单调区间和极值;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5aaf3cafdfd3eaf50c912fe5029fc239.png)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5828873f8369183faf71181cda5b61d2.png)
(2)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
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适中
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【推荐3】已知函数
,直线
在
轴上的截距为
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.
(1)求实数
的值;
(2)求函数
的单调区间与极值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b5a0bbf153ca63b5ee94a909254bc31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
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(1)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)求函数
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解答题-证明题
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适中
(0.65)
名校
【推荐1】已知函数
.
(1)若
,求
在
处切线方程;
(2)求
的极大值与极小值;
(3)证明:存在实数
,当
时,函数
有三个零点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01df19fba2e401940e7782ecd33d3cdc.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c9f8845aa2b51c460f2d798c9f62fa3.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(3)证明:存在实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
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适中
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【推荐2】已知函数
过点
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处的切线斜率为4,且
为函数的一个驻点.
(1)求函数
的解析式;
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的单调区间;
(3)若函数
有三个零点,求
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b269dce1ae3396d2afc82a91dc6f97ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9dbcf0320d94734aedd3d4e2e31b9827.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef00713e73b8357cc7900144f5505bc6.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
(2)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
(3)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f03e19c57906a74d3c393885ea551ab4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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适中
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【推荐3】已知函数
.
(1)若曲线
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、
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(1)若曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5828873f8369183faf71181cda5b61d2.png)
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(2)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e93c13c9d1a1f85ab7a9b044c669bf53.png)
(3)若
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适中
(0.65)
名校
【推荐1】设函数
,其中实数
,
是自然对数的底数.
(1)若
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/041a7c8fc017f596542c5e6ec7d1c40b.png)
(1)若
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适中
(0.65)
名校
【推荐2】已知函数
.
(1)若
,求曲线
在点
处的切线方程;
(2)若
在
处取得极值,求
的单调区间,以及
在
的最大值与最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efb5109b97577b5a4c3729a78e4f3b87.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b4d795709b0abcf47bceec2250f2f9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5828873f8369183faf71181cda5b61d2.png)
(2)若
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解答题-问答题
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适中
(0.65)
【推荐3】已知函数f(x)=
x3﹣
x2+ax(a∈R).
(1)当a=2时,求函数f(x)的单调区间;
(2)若函数y=f(x)在x=1处取得极小值,求a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dac452fbb5ef6dd653e7fbbef639484.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96f898df360ecd3814586d20027da44b.png)
(1)当a=2时,求函数f(x)的单调区间;
(2)若函数y=f(x)在x=1处取得极小值,求a的取值范围.
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