名校
1 . 已知动圆
恒过定点
,圆心
到直线
的距离为
.
(1)求
点的轨迹
的方程;
(2)过直线
上的动点
作
的两条切线
,切点分别为
,证明:直线
恒过定点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/969bb8b5cf54b25f2a8130a43bb0ee46.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1582637401c521626dc6f66cfdb01370.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9a2a685e822be9621d02d0ecfedca42.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)过直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e6e15daf7b14dbff32c390f4984dcfb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44434b647ec546fe787e2164e0be6cd2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
您最近一年使用:0次
2023-08-05更新
|
866次组卷
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5卷引用:陕西省西安市大明宫中学2023届高三高考综合文科数学试题
陕西省西安市大明宫中学2023届高三高考综合文科数学试题陕西省西安市大明宫中学2023届高三高考综合测试理科数学试题(已下线)考点17 解析几何中的定点与定直线问题 2024届高考数学考点总动员(已下线)重难点突破14 阿基米德三角形 (七大题型)(已下线)重难点突破12 双切线问题的探究(六大题型)(原卷版)-1
名校
解题方法
2 . 如图1,已知抛物线
的方程为
,直线
的方程为
,直线
交抛物线
于
两点
为坐标原点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/13/0008615f-3240-4be7-9b0b-35fd723516a1.png?resizew=318)
(1)若
,求
的面积的大小;
(2)
的大小是否是定值?证明你的结论;
(3)如图2,过点
分别作抛物线的切线
和
(两切线交点为
),
分别与
轴交于
,求
面积的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f09757d013574cf058d5bb944fdf034a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52ad7c068b9b7c0fd764cf7746407079.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6767830cc1811f0f4ea5a008fdc7e723.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f09757d013574cf058d5bb944fdf034a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/031da5d48fbe63745429b1add253344f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb7ddd8b2f1cfaac8c354bd3600860b3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/13/0008615f-3240-4be7-9b0b-35fd723516a1.png?resizew=318)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a882037b9ce104ecc496e0f31a139361.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/866b81a8384cce4f24867baca2e6820c.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d7b2fe01a33c4825f9974ed9663a99c.png)
(3)如图2,过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20ebaa32f4f1f4f807ca9aeb7fb29951.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcaebaf8ceed245eba896f36d8ff14b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d23b488f961d9fde37feb7f5c497c0d9.png)
您最近一年使用:0次
2023-12-12更新
|
554次组卷
|
3卷引用:陕西省西安市区县联考2023-2024学年高二上学期期末数学试题
名校
解题方法
3 . 已知
,曲线
与直线
相切于点![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5828873f8369183faf71181cda5b61d2.png)
.
(1)求
,
的值;
(2)证明:当
时,
恒成立.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea2c6963d0dc385e75724ac0631a552d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4022404158a19da85fe55773ebd331a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5828873f8369183faf71181cda5b61d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04582116cd765fcc5a52f44279ad6c94.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(2)证明:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e7812047c6a1b902cd9d40545d09731.png)
您最近一年使用:0次
2023-07-20更新
|
511次组卷
|
5卷引用:陕西省延安市宜川县中学2023届高三一模文科数学试题
4 . 已知函数
.
(1)求曲线
在点
处的切线方程;
(2)(ⅰ)若对于任意
,都有
,求实数
的取值范围;
(ⅱ)设
,且
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/666d7a2f65ef947fd349ad36c48150f6.png)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bea9227dd0104da58e0c40952cc87ed.png)
(2)(ⅰ)若对于任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a3be5e468089b7ebb31ef39ca911798.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f13cb28f745af51c1baaa352e8da38d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(ⅱ)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e156bd36aef172cb4e6360638aac4de6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9491c984a8d44bd6ce73ec490b2dc406.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fef2385ff37d27395b0e9a1b0cea808.png)
您最近一年使用:0次
5 . 已知函数
.
(1)求曲线
在点
处的切线方程;
(2)当
时,证明:函数
在
上有两个不同的零点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57326a8edd0e0e53a31135427cc3c20c.png)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5828873f8369183faf71181cda5b61d2.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d03fa8f5a701a2a61c1b902963bf88d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d562dc22dfb3b81d0c3f88b54d063c2f.png)
您最近一年使用:0次
名校
6 . 已知函数
.
(1)求
在点
处的切线方程;
(2)求证:
;
(3)若函数
无零点,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca47d2e8724200bf868215c66c5cfe40.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5828873f8369183faf71181cda5b61d2.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2aeda5c6f101566159dd4c460b943b2.png)
(3)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3735de91870e8d4fae514516cc57851.png)
您最近一年使用:0次
2023-06-19更新
|
953次组卷
|
3卷引用:陕西省汉中市2022-2023学年高二下学期期末校际联考理科数学试题
名校
解题方法
7 . 设函数
的图像在点
处切线的斜率为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8ce99d5fb0d69a2f790b1a84abb3fbf.png)
.
(1)求实数
的值.
(2)证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07abf4bd858ef1fa3e0de2cb70eb839a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2763b57a7399653fbded5264f0cee150.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8ce99d5fb0d69a2f790b1a84abb3fbf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc688d0cce1585f46a25e830ada2cd48.png)
(1)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22b0580106025f517ca2cda8bf675ca2.png)
您最近一年使用:0次
2023-06-25更新
|
439次组卷
|
3卷引用:陕西省商洛市镇安中学2023届高三下学期模拟考文科数学试题
解题方法
8 . 已知函数
.
(1)证明:曲线
在点
处的切线经过定点.
(2)证明:当
时,
在
上无极值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c68521cb2f0717726a2e6043022e800.png)
(1)证明:曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68c6b6a11760d0724b0b60e55970e229.png)
(2)证明:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2aa0f614825b665c5510054aaaa83cee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/870ebc2f7aabb028024894568d749934.png)
您最近一年使用:0次
2023-10-26更新
|
248次组卷
|
4卷引用:陕西省汉中市多校2023-2024学年高三上学期第四次联考文科数学试题
名校
9 . 已知函数
.
(1)求曲线
在点
处的切线方程;
(2)证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f41f5a93188e60af2f886330c1b5a1d7.png)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5828873f8369183faf71181cda5b61d2.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95ac388ba379ec8c66fdd3e1f1d64a74.png)
您最近一年使用:0次
2023-05-31更新
|
851次组卷
|
4卷引用:陕西省渭南市蒲城县2024届高三第二次对抗赛数学(理科)试题
10 . 已知函数
(
自然对数的底数)在点
处的切线方程为
.
(1)求
,
的值;
(2)求证:函数
在区间
内有唯一零点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/619b0f2a83100f9e49b4005c23010988.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/041a7c8fc017f596542c5e6ec7d1c40b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5828873f8369183faf71181cda5b61d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb82873ac4b56876dafeb55fe0549b2c.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(2)求证:函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe5239e374894f95da60c5cb35a2a718.png)
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