已知线段
的端点
的坐标是
,端点
在圆
上运动,
是线段
的中点,直线
过定点
.
(1)设点
的轨迹为曲线
,求
的方程;
(2)若直线
与曲线
相交于
两点,求
面积取最大值时,直线
的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc15036ecdf7ac0eac7ff7a03648ea1f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54329a84abb204cecb237b2bf2ff2bb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7a999c36de5c9a9ce876a4a56fa34c.png)
(1)设点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bce3d91ca23b86d8c6625f2632e437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e87b2f781cafa7989d81f9bf8c42b150.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
更新时间:2023-03-08 12:00:19
|
相似题推荐
解答题-问答题
|
较易
(0.85)
解题方法
【推荐1】(1)已知
、
,求证:
,并写出等号成立的条件.
(2)若正数
、
的算术平均值是2,求
、
的几何平均值的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/726c078ca626f64e0d02c2666d8af105.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/763aedde812a5798e8dcc14dbc17b29b.png)
(2)若正数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83666674f1111c699d7c5f7b792e0285.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c164ccad46c01d82312b2a6c6896a153.png)
您最近一年使用:0次
解答题-问答题
|
较易
(0.85)
解题方法
【推荐2】已知双曲线
的两个焦点为
,
,
为动点,若
.
(1)求动点
的轨迹
的方程;
(2)求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ffb877445206ef92ce21c0856c5408e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6fd7e8d87160b086a1022e76e487277.png)
(1)求动点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bf10adebe7d6ab8f4f2ecf1c6b20098.png)
您最近一年使用:0次
解答题-问答题
|
较易
(0.85)
名校
解题方法
【推荐3】植物园拟建一个多边形苗圃,苗圃的一边紧靠着长度大于30m的围墙.现有两种方案:
![](https://img.xkw.com/dksih/QBM/2016/4/28/1572606217986048/1572606224203776/STEM/66658df360484c6296b2f4676a6853bf.png?resizew=469)
方案① 多边形为直角三角形
(
),如图1所示,其中
;
方案② 多边形为等腰梯形
(
),如图2所示,其中
.
请你分别求出两种方案中苗圃的最大面积,并从中确定使苗圃面积最大的方案.
![](https://img.xkw.com/dksih/QBM/2016/4/28/1572606217986048/1572606224203776/STEM/66658df360484c6296b2f4676a6853bf.png?resizew=469)
方案① 多边形为直角三角形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bee4a6b8ef3e79b4482388c3391d8b18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a4d24165efcd72b9bc8698152a73a72.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd849437566efc72b3a74c73cd4727d.png)
方案② 多边形为等腰梯形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bedde879f99aed69d745d5ec8fe62084.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e6ef2adfeef80ff867b6d0cbe56bff9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ddf159818bae2ea575f1b010d503d72a.png)
请你分别求出两种方案中苗圃的最大面积,并从中确定使苗圃面积最大的方案.
您最近一年使用:0次
解答题-问答题
|
较易
(0.85)
名校
【推荐1】已知直线
与圆
交于
两点,点
在圆
上运动.
(1)当
时,求
;
(2)已知点
,求
的中点
的轨迹方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/844c8c7c4846a18ad97648824ab3e617.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8785046420bdd426bbd7a26041ff214.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84cef568cfe2fc12a4dec11533ada274.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(2)已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f13bf66fc845b115de4ec45b4be0e23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
您最近一年使用:0次
解答题-问答题
|
较易
(0.85)
【推荐2】已知
的边
的长为
,若
边上的中线为定长
,以直线AB为x轴,线段AB的中垂线为y轴建立平面直角坐标系,求顶点
的轨迹方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
您最近一年使用:0次
【推荐1】已知圆C:
,直线
.
(1)求证:对任意
,直线l与圆C总有两个不同的交点;
(2)设直线l与圆C交于A、B两点,若
,求直线l的倾斜角.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c82a1fed135888e1c072bc5078fc8a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3445947fa34dd409a1354786e6c4a579.png)
(1)求证:对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2725a89d93c791f7a0098f4964587905.png)
(2)设直线l与圆C交于A、B两点,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed79cde317cee7f73037f66f52f02a50.png)
您最近一年使用:0次
解答题-证明题
|
较易
(0.85)
解题方法
【推荐2】已知圆
的圆心为
,半径为3,
是过点
的直线.
(1)求圆
的方程,并判断点
是否在圆上,证明你的结论;
(2)若圆
被直线
截得的弦长为
,求直线
的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/879a4007beef22e009248112d664f7c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5c10f14aae6fb21e047ecb39cdf40c0.png)
(1)求圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(2)若圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b91d650c2fc1a741fabdb333b09aeb6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
您最近一年使用:0次
解答题-问答题
|
较易
(0.85)
【推荐1】已知极坐标系的极点在平面直角坐标系的原点
处,极轴与
轴的非负半轴重合,且长度单位相同,直线
的极坐标方程为
,曲线
(
为参数).其中
.
(1)试写出直线
的直角坐标方程及曲线
的普通方程;
(2)若点
为曲线
上的动点,求点
到直线
距离的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2264b1ab69bece74eef77f7832b3c0c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3679cad43927e1adbd8cc3c14a88be33.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/478d78848ca1be76aa5dfb2df2dbecd0.png)
(1)试写出直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
您最近一年使用:0次
解答题-问答题
|
较易
(0.85)
【推荐2】在平面直角坐标系
中,圆C的参数方程为
(
为参数),以O为极点,x轴的正轴为极轴建立极坐标系,直线l的极坐标方程为
.
(1)若l过C的圆心,求实数m的值;
(2)当
时,求C上的点到l距离的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f6dd02bd11ca893f2f54bb9ba69999d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3648bbc0bb03eb33a7f0f0e87afd730a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e957ac807ed4b0fb72eb6a17771eb4e.png)
(1)若l过C的圆心,求实数m的值;
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c7a1d739890a8951586e23b78b035bc.png)
您最近一年使用:0次