解题方法
1 . 已知
且满足
的动点
的轨迹为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/15/7f29b29c-a0c0-45ae-8583-4e75668e4827.png?resizew=183)
(1)求曲线
的方程;
(2)如图,过点
的斜率大于零的直线与曲线
交于
、
两点,
,直线
交曲线
于另外一点
,证明直线
过定点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca1142f3e7a330a26e35cb94ad5392c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/084c56270081811704aa3660859e8e57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aee82283f06cedef32eb15b87964f5d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/15/7f29b29c-a0c0-45ae-8583-4e75668e4827.png?resizew=183)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)如图,过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53e4a3aea4b4b0d87c014030a6ff9027.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/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12675b38cf628368b125710787da40b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3525ddc5153fada64eaf14e50b536542.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
您最近一年使用:0次
名校
解题方法
2 . 已知直线l:y=x﹣1与椭圆C:
1(a>1,b>0)相交于P,Q两点M
,
.
(1)证明椭圆过定点T(x0,y0),并求出
的值;
(2)求弦长|PQ|的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bd4fd9bfd38c5361d55735bfe4bb2d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc6554ac3dff4a59833e407db887f6e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efda6d4a7b9c252cedd3c52ddf469e7c.png)
(1)证明椭圆过定点T(x0,y0),并求出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/185e94c1b651c2973ee86d724e38e16e.png)
(2)求弦长|PQ|的取值范围.
您最近一年使用:0次
2022-04-07更新
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1160次组卷
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5卷引用:浙江省金华第一中学2021-2022学年高二上学期期中数学试题
浙江省金华第一中学2021-2022学年高二上学期期中数学试题河北省石家庄市2021届高三二模数学试题(已下线)专题3.5 直线与椭圆的位置关系-重难点题型精讲-2021-2022学年高二数学举一反三系列(人教A版2019选择性必修第一册)陕西省西安高新唐南中学2020-2021学年高二下学期期末理科数学试题(已下线)专题8 解析几何 第4讲 圆锥曲线中的定点,定值,探究性问题
3 . 如图,已知抛物线
与x轴相交于点A,B两点,P是该抛物线上位于第一象限内的点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/14/b4f27ae1-aec4-43e5-86dd-5c022473e056.png?resizew=168)
(1)记直线
的斜率分别为
,求证
为定值;
(2)过点A作
,垂足为D.若D关于x轴的对称点恰好在直线
上,求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40c184c17e35b98fe8094cebe9522e1c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/14/b4f27ae1-aec4-43e5-86dd-5c022473e056.png?resizew=168)
(1)记直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/790ef3382b1c731f2885eecfd92c2a86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90963760acac7bfad3ae03088c6c80b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82b0aeee86644df4cd2f02f38e0535ec.png)
(2)过点A作
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdfa54114f04a75b8c96165b3718ed7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55a675310c8ba418e5a59beb7317e21e.png)
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4 . 已知
分别为椭圆W:
的左、右焦点,M为椭圆W上的一点.
(1)若点M的坐标为
(
),求
的面积;
(2)若点M的坐标为(x0,y0),且
是钝角,求横坐标x0的范围;
(3)若点M的坐标为
,且直线
(
)与椭圆W交于两不同点
,求证:
为定值,并求出该定值;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c82e7d9f4f7ace849e09e9adcb786b7f.png)
(1)若点M的坐标为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb3a30dbf14b01f6f28900cbe5814d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58b140e221ddf537b8964fff8557cca0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08f9a699aededce0ad803bf8257fbbcb.png)
(2)若点M的坐标为(x0,y0),且
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e22a3c7e465a61e9849dd223261be47c.png)
(3)若点M的坐标为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab1242ec96ac54e2fd418988d5190a88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bec980f8331395f2955c4b6e49580a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37b97b295f88972ba1c7e3cefda0885d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6356488b921e900ad8f0448d20e918e6.png)
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2021-08-25更新
|
838次组卷
|
8卷引用:浙江省绍兴市诸暨市第二高级中学2021-2022学年高二上学期期中数学试题
浙江省绍兴市诸暨市第二高级中学2021-2022学年高二上学期期中数学试题上海市新场中学2020-2021学年高二下学期期中数学试题福建省连城县第一中学2021-2022学年高二10月第一次月考数学试题江苏省淮安市马坝高级中学2021-2022学年高二上学期期中数学试题(已下线)第十一章 圆锥曲线专练17—抛物线综合练习1-2022届高三数学一轮复习(已下线)一轮复习大题专练67—抛物线1(定值问题)—2022届高三数学一轮复习江苏省仪征市精诚高级中学2022-2023学年高二上学期期中模拟考试数学试题(已下线)第20讲 椭圆的简单几何性质10种常见考法归类(2)
解题方法
5 . 已知函数
在
上单调递减.
(1)求实数
的取值范围;
(2)当实数
取最大值时,方程
恰有二解,求实数
的取值范围;
(3)若
,求证:
.(注:
为自然对数的底数)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29b8744c94d54246ce023e8a88b998c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d303edb2b74f0152e9da9e0b77a1ca37.png)
(1)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)当实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f826c4322fdbf0838670d917f7735e89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f86f9b0f357d6166ebc79012bf88706.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55278cd8cbc74b25a26141e20fe78e16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9003a22f3bfbdc2dba7869c0f7d54c8c.png)
您最近一年使用:0次
解题方法
6 . 如图,已知点
是抛物线
:
上一点,过点
作两条斜率相反的直线分别与抛物线交于
、
两点,直线
的斜率为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/8/a2499f66-a510-4402-bb9a-16b98357a886.png?resizew=164)
(Ⅰ)若直线
、
恰好为圆
的切线,求直线
的斜率;
(Ⅱ)求证:直线
的斜率为定值.并求出当
为直角三角形时,
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2007972af3341f27fbc32ce62dfce5e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b072ff6d1b83232bebd7d4709ffba4ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6bdac20e214b2cb3bd07f8d4778dcca.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/8/a2499f66-a510-4402-bb9a-16b98357a886.png?resizew=164)
(Ⅰ)若直线
![](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/d9df0d79e42d86b0def4caa10dffa75a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
(Ⅱ)求证:直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2205cffebf8c4d5f81d15ed7b85c8936.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2205cffebf8c4d5f81d15ed7b85c8936.png)
您最近一年使用:0次
名校
7 . 已知函数
.
(1)当
时,求函数
的单调区间;
(2)若函数
有两个不同零点
,
,
①求实数a的取值范围;
②求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8e588493b8b36ae327fc6c8441e7968.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f22a4a0dd7307a1323d25331e60782d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b916df8bdd03ba4a31c0b8470d13436.png)
①求实数a的取值范围;
②求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea0b3770485f6829ae71baf93a72ab3e.png)
您最近一年使用:0次
2021-11-13更新
|
1174次组卷
|
4卷引用:浙江省宁波市2021-2022学年高三上学期11月高考模拟考试数学试题
浙江省宁波市2021-2022学年高三上学期11月高考模拟考试数学试题黑龙江省鹤岗市第一中学2021-2022学年高二下学期期中考试数学试题(已下线)2022年高考浙江数学高考真题变式题13-15题(已下线)2022年高考浙江数学高考真题变式题19-22题
8 . 已知
且
,函数
.
(1)当
时,设
的导函数
,求
的单调区间;
(2)若函数
恰有两个互异的零点
.
(i)求实数
的取值范围;
(ii)求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c400a615a16a1662de98dfb4e49d58d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fe0e59c2be6bf4cdf5f79d1b3d7aeb0.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a4b04824a308519a61318a82aa97a05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a4b04824a308519a61318a82aa97a05.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f85e8c228262241b98dc0850e130014.png)
(i)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(ii)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81c0ccd77071707c7908b331f57cbaab.png)
您最近一年使用:0次
名校
9 . 已知双曲线的中心在原点,焦点F1,F2在坐标轴上,离心率为
,且过点
,点
在双曲线上.
(1)求双曲线的方程;
(2)求证:
·
=0;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7fe90d9d33d16d255156bc6ef3aad80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c61622eb7fa6fabe6bd361bd5aa6107.png)
(1)求双曲线的方程;
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7a5c784bb4ffeb0c1981b77a2b7b2e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa795497406a532e2a8759a3a79ee702.png)
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2021-08-24更新
|
683次组卷
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11卷引用:浙江省绍兴市诸暨市第二高级中学2021-2022学年高二上学期期中数学试题
浙江省绍兴市诸暨市第二高级中学2021-2022学年高二上学期期中数学试题广西玉林市育才中学2020-2021学年高二下学期期中数学(理)试题广西玉林市育才中学2020-2021学年高二下学期期中数学(文)试题(已下线)考点36 双曲线-备战2022年高考数学一轮复习考点帮(浙江专用)福建省平和第一中学2021-2022学年高二上学期期中考试数学试题黑龙江省宾县一中2019-2020学年高二上学期第一次月考数学(文)试卷(已下线)专题9.7 抛物线(练)【文】-《2020年高考一轮复习讲练测》(已下线)专题9.6 双曲线(练)-江苏版《2020年高考一轮复习讲练测》黑龙江省牡丹江市穆棱一中2019-2020学年高二上学期期末数学(理)试题(已下线)专题9.6 双曲线(精练)-2021年高考数学(文)一轮复习讲练测(已下线)第三章 圆锥曲线与方程(单元重点综合测试)-2023-2024学年高二数学单元速记·巧练(苏教版2019选择性必修第一册)
10 . 设函数
,其中
为自然对数的底数.
(1)求
的单调区间;
(2)若
恒成立,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2caa5f98a95210c952202e9b2f2ecad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9788a96371bfe76733bc32293b4a920.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e9c599e8d420006448905acec2b8234.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a795273fc3086fe863c836be42db914.png)
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