名校
解题方法
1 . 已知函数
.
(1)设
是
图象上的两点,直线
斜率
存在,求证:
;
(2)求函数
在区间
上的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4b766e185b223b7d640a52e78661946.png)
(1)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/276c69cee8096b50884b11315045a968.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09b29a7faa14a6e09d0db2d04f4ced03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f0d68648b10fce54dfc19c5ee60086d.png)
(2)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fe75a177e6e32a8f7188975f0ad2e48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/032e3d25c9f38a3cf745fed1ce3297be.png)
您最近一年使用:0次
2021-05-28更新
|
489次组卷
|
9卷引用:第03讲 二次函数-【提高班精讲课】2021-2022学年高一数学重点专题18讲(沪教版2020必修第一册,上海专用)
(已下线)第03讲 二次函数-【提高班精讲课】2021-2022学年高一数学重点专题18讲(沪教版2020必修第一册,上海专用)上海市青浦高级中学2021届高三三模数学试题上海市青浦区2021届高三三模数学试题(已下线)考向09 幂函数与二次函数(重点)(已下线)模块04 幂函数、指数函数和对数函数-2022年高考数学一轮复习小题多维练(上海专用)(已下线)考向25 直线与方程-备战2022年高考数学一轮复习考点微专题(上海专用)(已下线)专题03 函数(1)-备战2022年高考数学(文)母题题源解密(全国乙卷)(已下线)考点06 指数函数图象与性质-备战2022年高考数学典型试题解读与变式(已下线)第12讲 直线和圆的方程- 1
名校
解题方法
2 . 如图,在平面直角坐标系
中,A,B是圆O:
与x轴的两个交点(点B在点A右侧),点
,x轴上方的动点P使直线
,
,
的斜率存在且依次成等差数列.
![](https://img.xkw.com/dksih/QBM/2020/2/27/2408261106483200/2408810838794240/STEM/6684f811-efdc-4999-9684-68edddc6c4e0.png)
(1)求证:动点P的横坐标为定值;
(2)设直线
,
与圆O的另一个交点分别为S,T.求证:点Q,S,T三点共线.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f240cccaf24af8a796abb95cb42be52e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f23728b4c0467a27d90f71b424f6a946.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://img.xkw.com/dksih/QBM/2020/2/27/2408261106483200/2408810838794240/STEM/6684f811-efdc-4999-9684-68edddc6c4e0.png)
(1)求证:动点P的横坐标为定值;
(2)设直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
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名校
3 . 已知过原点
的一条直线与函数
的图象交于
、
两点,分别过点
、
作
轴的平行线与函数
的图象交于
、
两点.
(1)证明:点
、
和原点
在同一直线上;
(2)当
平行于
轴时,求点
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f11757bca0168e9f569d42e2803d57b1.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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2702a5539ca829b8b7a08407f0996e8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
(1)证明:点
![](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/1dde8112e8eb968fd042418dd632759e.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
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4 . 过抛物线
的对称轴上的定点
,作直线
与抛物线相交于
、
两点.
(1)证明:
、
两点的纵坐标之积为定值;
(2)若点
是定直线
上的任一点,设三条直线
,
,
的斜率分别为
,
,
,证明
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3764ba3aa0a241787f4661026bb14053.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf2f0d9868a1a561f6415369cbf5ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02c25e28fd001fbf07c3f3ea2e89a35a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f50b3ae183997b707d16eb4e7f6712fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7785afeeaf274892253d04b4f693b367.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ff131c92aa9e10f696d374216cdcf4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f95cefb160c373407a49e3a8aee1a228.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0721e40e4c6929a24c54d2035c4014a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b1241589f386e0091d54a3c97fd338c.png)
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2020-07-01更新
|
269次组卷
|
2卷引用:黑龙江省鸡西实验中学2020-2021学年高中教师命题大赛数学试题
5 . 设A,B两点的坐标分别是
,
,直线AB的斜率为
.求证:
(1)
.
(2)
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56720e2f2b0ddd72156da495923698da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2852ae85cfcc804b3192ea8543c88938.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2799abb64fd7bfce9dfa7228aa460564.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0fd829f27c39d079115bfbba29e5b32.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b09b54d7218ef9357c716f00ece6b72.png)
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6 . (1)求经过下列两点的直线的斜率,并判断其倾斜角是锐角、直角还是钝角.
①
,
;
②
,
;
③
,
.
(2)已知点
,
,
.求证:A,B,C三点共线.
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e0b78171a4d834a3c1fd9a484bd2e2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afa482d7bcaa385bfc3548b42a4bfb60.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29bb7ff5012ac35f2e5fa64b0247ce93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1beb189381103ad1e758fd8cfedb6355.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fecdbb564d76077de1d163243933a81d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85d3032c2532cb9b71bbe19de048139d.png)
(2)已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1720c968854106555f4dfcb7f38cdac7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1282cc43ebf4b459832fec04d805989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3b5e164e4c4a86eb4d9873797bad402.png)
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7 . 已知圆
:
和点
,
,
,
.
(1)若点
是圆
上任意一点,求
;
(2)过圆
上任意一点
与点
的直线,交圆
于另一点
,连接
,
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f240cccaf24af8a796abb95cb42be52e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cd99c5000629d7f49499d666e68f40d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/002360a6c8354d8c8c83eee93d875270.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/134fc3507b06c25a6cdf06b7ae11f055.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff7ef0aa248a1b1fa43fe79e01c0b91d.png)
(1)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a76f054d5243832de5156e24cdf0525.png)
(2)过圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c884b508394b3ab50734b584d9ec783c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dafebaaf13781120dc57c277d0267c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5039702933c6732218dbdcda82e59c1.png)
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2019-07-06更新
|
1822次组卷
|
2卷引用:2019年广东省广州市海珠区高一下学期期末考试数学试题
8 . 求证:A(1,-1)、B(-2、-7)、C(0,-3)三点共线.
您最近一年使用:0次
9 . 坐标法是解析几何中最基本的研究方法,坐标法是以坐标系为桥梁,把几何问题转化成代数问题,通过代数运算研究几何图形性质的方法.请利用坐标法解决以下问题:
(1)在直角坐标平面内,已知
,对任意
,试判断
的形状;
(2)在平面内,已知
中,
,
为
的中点,
交
于
,求证:
.
(1)在直角坐标平面内,已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e5e9ea0691daa797bd0889d7f5a6133.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6057df53aac56374ddf8146623f64678.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72cb97395ebc5ee1b212afb7a97b985c.png)
(2)在平面内,已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5034e2d0d1bd5792403a62df2c950e7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7a9bd800bdf8f09e56bb8c9de37de34.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4517371dfbf00378551aaae1a04ecc99.png)
![](https://img.xkw.com/dksih/QBM/2012/2/11/1570731291418624/1570731297046528/STEM/9d2658a7-8285-49f8-b3ff-e0b9a325dcad.png?resizew=146)
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