名校
解题方法
1 . 已知点
关于直线
的对称点为
.
(1)求点
的坐标;
(2)若点
在直线
上,点
为坐标原点,在下列条件下求点
的坐标;
①
最小
②
最小
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8115c09f801cf0bb02293baef7bf137.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28c9df2a25d2f5abd064663716cb6c64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
(1)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f910226d3e074751ffebbd6eeae96e27.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16322db63f32055c44ffe32d8d498fe7.png)
您最近一年使用:0次
2 . 小明设计了一款正四棱锥形状的包装盒,如图所示,
是边长为
的正方形硬纸片,切去阴影部分所示的四个全等的等腰三角形,再沿虚线折起,使得
四个点重合于图中的点
,正好形成一个正四棱锥形状的包装盒,设正四棱锥底面正方形的边长为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/3/ee3deeb4-f97a-4a8d-92fc-0a9a797524d5.png?resizew=242)
(1)试用
表示该四棱锥的高度
,并指出
的取值范围;
(2)若要求侧面积不小于
,求该四棱锥的高度的最大值,并指出此时该包装盒的容积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dde7ecce8a793b8a5f25fc1651207b83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97153bc3d02dfb38ee046487a8037a41.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/3/ee3deeb4-f97a-4a8d-92fc-0a9a797524d5.png?resizew=242)
(1)试用
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3eabd5f3a86afe49dcd70571e2b96cfd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(2)若要求侧面积不小于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/763ff4db4f7354463b5280a45c7c80ef.png)
您最近一年使用:0次
名校
3 . 设点
,
是正三角形,且点
在曲线
上.
(1)证明:点
关于直线
对称;
(2)求
的周长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e90dd00eb3b771c28eaedf02fe257984.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da6b93dbe5272a5167ff4e2918bec864.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1825fa2d7595d89cda0b2b53163276c4.png)
(1)证明:点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da6b93dbe5272a5167ff4e2918bec864.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d77f5191798242b7b9b88a75e17e4425.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次
4 . 已知点
,
分别为线段
上的动点,且满足![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7de966c316db1013defc56372fcf814e.png)
(1)若
求直线
的方程;
(2)证明:
的外接圆恒过定点(异于原点).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6e91aee78b2293d162e117a7a15655a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39acab3cfb59bfc9591371721ab01d93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5a5e484dfef494d27bc35ae7b8cf75d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7de966c316db1013defc56372fcf814e.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c483745c2455e26d7e695f5727600ee8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a090d241903d3f409644768e5127568e.png)
您最近一年使用:0次
2016-12-03更新
|
1040次组卷
|
8卷引用:江苏省无锡市第一中学2017-2018学年高二上学期期中数学试题
名校
5 . 已知圆
的圆心
在
轴上,半径为1,直线
被圆
所截的弦长为
,且圆心
在直线
的下方.
(1)求圆
的方程;
(2)设
,若圆
是
的内切圆,求
的面积
的最大值和最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c750c223468b424fa874e72966313f93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
(1)求圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20e105a9af79bfe9d47191de135e9a85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
您最近一年使用:0次
2018-06-04更新
|
476次组卷
|
8卷引用:江苏省太仓市明德高级中学2017-2018学年高二上期中复习(直线与圆)数学试题
江苏省太仓市明德高级中学2017-2018学年高二上期中复习(直线与圆)数学试题2017届河北武邑中学高三理周考12.4数学试卷江苏省苏州市高新区第一中学2019-2020学年高一下学期期中数学试题(已下线)《考前20天终极攻略》5月27日 直线与圆【理科】(已下线)《考前20天终极攻略》5月28日 直线与圆【文科】西藏拉萨中学2019-2020学年高一下学期期中考数学试题(已下线)2.5.3 直线与圆的综合-2020-2021学年高二数学课时同步练(人教A版选择性必修第一册)新疆乌鲁木齐市第八中学2018-2019学年高一下学期期末考试数学试题
名校
6 . 在平面直角坐标系xOy中,圆O:
与坐标轴分别交于A1,A2,B1,B2(如图).
(1)点Q是圆O上除A1,A2外的任意点(如图1),直线A1Q,A2Q与直线
交于不同的两点M,N,求线段MN长的最小值;
(2)点P是圆O上除A1,A2,B1,B2外的任意点(如图2),直线B2P交x轴于点F,直线A1B2交A2P于点E.设A2P的斜率为k,EF的斜率为m,求证:2m﹣k为定值.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/17/68b38476-f4c2-49d8-a645-6b93f7c230c6.png?resizew=428)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5f5d967ad135991b6075ee45df55643.png)
(1)点Q是圆O上除A1,A2外的任意点(如图1),直线A1Q,A2Q与直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b12dab697596b2417f0f2e945113bc40.png)
(2)点P是圆O上除A1,A2,B1,B2外的任意点(如图2),直线B2P交x轴于点F,直线A1B2交A2P于点E.设A2P的斜率为k,EF的斜率为m,求证:2m﹣k为定值.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/17/68b38476-f4c2-49d8-a645-6b93f7c230c6.png?resizew=428)
(图1) (图2)
您最近一年使用:0次
2018-12-11更新
|
463次组卷
|
5卷引用:江苏省泰州中学2018届高三10月月考数学(文)试题
名校
解题方法
7 . 在正方体
中,
是底面
对角线的交点.
![](https://img.xkw.com/dksih/QBM/2020/2/27/2408260226809856/2408905227624448/STEM/e8933100ab564ce8b54333bf38008aac.png?resizew=270)
求证:(1)
平面![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fae7f4612c548b1f72a964ddb291cd2e.png)
(2)平面
平面
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://img.xkw.com/dksih/QBM/2020/2/27/2408260226809856/2408905227624448/STEM/e8933100ab564ce8b54333bf38008aac.png?resizew=270)
求证:(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ea573e28da56431d5ae98e4e7a03019.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fae7f4612c548b1f72a964ddb291cd2e.png)
(2)平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/692879e280a60b2c044be774440dc914.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fae7f4612c548b1f72a964ddb291cd2e.png)
您最近一年使用:0次
2020-02-28更新
|
289次组卷
|
3卷引用:江苏省睢宁县古邳中学2017-2018学年高二上学期第一次月考数学试题
12-13高二下·广东·期末
名校
8 . 已知圆
.
(1)直线
与圆
相交于
两点,求弦
的长度;
(2)如图,设
,
是圆
上的两个动点,点
关于原点的对称点为
,点
关于
轴的对称点为
,如果直线
与
轴分别交于
和
,问
是否为定值?若是求出该定值;若不是,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79382ba44ba669b5d43fdd5427adf16c.png)
(1)直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/521002f6aad04339575a904892cd6719.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e52586ca2a3b783bc8092415e2d4bf6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(2)如图,设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49dd9a3bc9b01520fa2def6ebf0968c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a57a6629f3b0dd4418ea7ccf12d217b.png)
![](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/4b104090ea2ac34be58a76a4e0e95cb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7df1d9b712b639c8b6809c9f3ae03706.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48334717bb07eacf9b40d892992274d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80147892427592d9c079c2d6f3c9cc5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f26b067f7067bc3271cfbe2d7f3ef700.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcb74ca8fc86ddef279e33f31c1fedda.png)
![](https://img.xkw.com/dksih/QBM/2017/12/16/1839507294625792/1840287686860800/STEM/9766a5bd64d84449b52a86602e01c4da.png?resizew=189)
您最近一年使用:0次
2017-12-17更新
|
743次组卷
|
6卷引用:江苏省如东高级中学2018届高三上学期期中考试数学试题
解题方法
9 . 在图所示的几何体中,面
为正方形,面
为等腰梯形,
,
,
,
.
![](https://img.xkw.com/dksih/QBM/2017/11/7/1812139620966400/1813566693744640/STEM/bab5a6ff25da4ef4af5752539d1ac212.png?resizew=272)
(1)求证:
平面
;
(2)线段
的中点为
,求证
平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b32c05247f6998d7a70d31d13be4148c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10df84d553a8826a7ce9bff4bf0d95b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29e240a6378adf6d23ebf9cc710c9bd6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/526908dfb46cf151b8ab1492a9d52047.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac5867254f6e74a3e31237279cd481f6.png)
![](https://img.xkw.com/dksih/QBM/2017/11/7/1812139620966400/1813566693744640/STEM/bab5a6ff25da4ef4af5752539d1ac212.png?resizew=272)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e56fdf217165748fafe938b64fa08179.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e51817ee1ebf17c73ed21171bcfc5b5.png)
(2)线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05a162b0af925d3b18d0f7e2c3b32dcd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f4291a7c647aaf6d00e48bed030b48c.png)
您最近一年使用:0次
解题方法
10 . 如图,在三棱锥
中,已知
是正三角形,
平面
为
的中点,
在棱
上,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/7/0753da9a-35a4-460b-ac49-4e9138678b98.png?resizew=194)
(1)求三棱锥
的体积;
(2)求证:
平面
;
(3)若
为
中点,
在棱
上,且
,求证:
平面
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4357d5744046d4d44abb09e1ee35fcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f010b76578240c9efbbe0bc173d24714.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21f9157fce2a8339d281178c7c0bccbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee283c8b16bb83aa6119be01186bcf0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/457eb716c608c6b4fb6e91c8fc2ed163.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/7/0753da9a-35a4-460b-ac49-4e9138678b98.png?resizew=194)
(1)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4357d5744046d4d44abb09e1ee35fcb.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e56fdf217165748fafe938b64fa08179.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/134ef0b1a2669a09f05bd4dc2496f706.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d97dc3b752832906de41447bb58a341.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2239d3ef65845a7855c84932428bf079.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1eaa5e336f830a3e5cd60ff7a756f3ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/134ef0b1a2669a09f05bd4dc2496f706.png)
您最近一年使用:0次
2017-12-26更新
|
888次组卷
|
3卷引用:江苏省无锡市江阴四校2017-2018学年高二上学期期中考试数学试题