解题方法
1 . 函数
图像与
轴的两交点为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b67a988eee36733f064546a4b232092.png)
(1)令
,若
有两个零点,求实数
的取值范围;
(2)证明:
;
(3)证明:当
时,以
为直径的圆与直线
恒有公共点.
(参考数据:
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10c80e4cb0344c6e0c4541e86c5fb08a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b67a988eee36733f064546a4b232092.png)
(1)令
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9113131c37fe929112eab275820a1f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a813b5adbf5c7082561237894ba6d599.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b725fdc8de9800f2692f6fea8585b1e9.png)
(3)证明:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b87ecc31822d729a45488d803fff4e16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/feac29c5d1c1bc3e6dd5ad931fbd332b.png)
(参考数据:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3dcd81aeafbda57f23cdc852ab6c35a.png)
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2 . 已知函数
.
(1)当
时,求
的单调区间;
(2)若函数
恰有两个零点,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e3d4e49babb9059d25e69fea2459f95.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be466586da8810ccfd811c59a747adb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cedcf14b3a920c5bf766e7fddfb7d930.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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3 . 已知函数
,其中
.
(1)讨论函数
的单调性;
(2)若
,证明:函数
有唯一的零点;
(3)若
,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bca0c0fd7170d190e3e742db0e89033.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20849c00c47cbdc43f18d53341b6c4e5.png)
(1)讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c73a98c1b3504e09bfbe0db849b0d24.png)
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2024-02-18更新
|
889次组卷
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3卷引用:福建百校联考2024届高三下学期正月开学考试数学试题
名校
解题方法
4 . 已知函数
,
.
(1)当
时,
(i)求曲线
在点
处的切线方程;
(ii)求
的单调区间及在区间
上的最值;
(2)若对
,
恒成立,求a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c589325db8016e1566cdcf20d43e288.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/111324440f372e35f0f37dd29837bea7.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b4d795709b0abcf47bceec2250f2f9b.png)
(i)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ea9824af71c9da5db5a00ec06063024.png)
(ii)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f909328384f9c52134243753d9c954ef.png)
(2)若对
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/735fe7737e87152893863b1a11f7a197.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0527a896aec4a245945e5edee00deed.png)
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2023-09-16更新
|
744次组卷
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4卷引用:天津市第二中学2023-2024学年高三上学期开学学情调查数学试题
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5 . 已知
,
是
的导函数,其中
.
(1)讨论函数
的单调性;
(2)设
,
与x轴负半轴的交点为点P,
在点P处的切线方程为
.
①求证:对于任意的实数x,都有
;
②若关于x的方程
有两个实数根
,且
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42fe84ecdcafb66c2e3a4dd702503729.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/724340d69477c0ec2418c392b22b1cab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10bbdef421c976962a270a2beabbad91.png)
(1)讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/724340d69477c0ec2418c392b22b1cab.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5662583ace896ce1f779eaba4911f156.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1938c093dd2fbcb752d0eb7a18d143b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1938c093dd2fbcb752d0eb7a18d143b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f786a5701dc1a8a015e8843c3360151b.png)
①求证:对于任意的实数x,都有
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5207aa3a627a574a1e12ae87dd609fdb.png)
②若关于x的方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1083654e970df6adf6e1c5967501e80c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26d8dafc71b106f39f4e15442220897b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee624bd3ec8c33ac93551432b739af17.png)
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解题方法
6 . 设动点M与定点
的距离和M到定直线l:
的距离的比是
.
(1)求动点M的轨迹方程,并说明轨迹的形状;
(2)当
时,记动点M的轨迹为
,动直线m与抛物线
:
相切,且与曲线
交于点A,B.求
面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b211a07d203aa93e12e230e8c8d4e49e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a7e97b3198d168172382a72301e3fc5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d60f795848acda0b39e2865af2ef2a14.png)
(1)求动点M的轨迹方程,并说明轨迹的形状;
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/413f9851aad373d782ae62b308f1de85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cffa35373ec4e4684107b42adb7a5161.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bcd8ee2d8367c167d6ae0abc741b6b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/745de5ef1fd897d16e37464172d5e8c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cffa35373ec4e4684107b42adb7a5161.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/866b81a8384cce4f24867baca2e6820c.png)
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2023-09-01更新
|
1077次组卷
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6卷引用:广东省佛山市南海区2024届高三上学期8月摸底数学试题
广东省佛山市南海区2024届高三上学期8月摸底数学试题(已下线)考点18 导数的应用--函数最值问题 2024届高考数学考点总动员【练】(已下线)专题突破卷23 圆锥曲线大题归类(已下线)重难点突破07 圆锥曲线三角形面积与四边形面积题型全归类(七大题型)(已下线)第08讲 直线与圆锥曲线的位置关系(四大题型6个方向)(讲义)-2广东省广州市三校(铁一、广外、广大附中)2023-2024学年高三上学期11月期中联考数学试卷
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7 . 已知
,函数
.
(1)若
和
的最小值相等,求
的值;
(2)若方程
恰有一个实根,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81131bfbaf56a2cd309579a6783f0456.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9587df831df1af5e7dd6be5fdc7bd8ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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2023-02-10更新
|
1617次组卷
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5卷引用:山东省2022-2023学年高三下学期开学考试联考数学试题
名校
解题方法
8 . 已知函数
.
(1)若
,求
在区间
上的最小值;
(2)若
有两个不同的极值点
,
(
且
),且不等式
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a45e205918980a3dd2ed26d428c1d850.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f08ce80e91fdf435a8e3ec05be990e9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c22ee9c23b2a0d36c85c175b2e4aaf4.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26d8dafc71b106f39f4e15442220897b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba93f19e4328de1bad07d33c7d47cb95.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba1e5ca81dfba1f41bbf6010b4bc9b4d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
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2022-11-26更新
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777次组卷
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2卷引用:江西省吉安市第三中学2024届高三上学期开学考试(艺术类)数学试题
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解题方法
9 . 已知
,
为
的导函数.
(1)求
在
的最小值;
(2)
,当
时,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa984bc043016a9042ea849a96ded967.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/724340d69477c0ec2418c392b22b1cab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/724340d69477c0ec2418c392b22b1cab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ed2f490aac02631c2ed9e6b76354a49.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2955344f722ff0d548ae27325ca9b8ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d947dd82b47cb4f5df361ed9341d888b.png)
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10 . 已知
.
(1)当
时,求
在
上的最大值;
(2)当
时,讨论函数
的单调性;
(3)当
时,求
恒成立,求正整数
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ca72755963207dfc1593728580f3d9.png)
(1)当
![](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/1e7eccdc19dbe2b4c7a30878c054e8c7.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb5f421939ee855f25927e7570d82c71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59436ca2bbff14fa13d40e3d50b134cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4acda6b6464db27e1ec18a1522406d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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