名校
解题方法
1 . 如图:
平面
,
是矩形,
,
,点
是
的中点,点
在边
上移动.
![](https://img.xkw.com/dksih/QBM/2020/2/19/2402332989947904/2402429698990080/STEM/c74f674ee5f945a9afbe9283603dfbbf.png?resizew=200)
(Ⅰ)求三棱锥
的体积;
(Ⅱ)当点
为
的中点时,试判断
与平面
的位置关系,并说明理由;
(Ⅲ)证明:无论点
在边
的何处,都有
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e7b6d04f024ca05cdfacc8ce9137c15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d783fe7f3ce673d5d21281174e7a7968.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/2020/2/19/2402332989947904/2402429698990080/STEM/c74f674ee5f945a9afbe9283603dfbbf.png?resizew=200)
(Ⅰ)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37d1190fdc8609b1e43957aaaaf4abbe.png)
(Ⅱ)当点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0628681907ac8d7fdb94d8bc1b15feb9.png)
(Ⅲ)证明:无论点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a395778dcf588264f40e1cd8c96206d.png)
您最近一年使用:0次
2020-02-19更新
|
425次组卷
|
3卷引用:宁夏银川市六盘山高级中学2019-2020学年高一上学期期末数学试题
名校
解题方法
2 . 若直线
与直线
平行,则直线
在坐标轴上的截距之和为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0732c70e2fef7b7b69ad2eb587cac38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d4cb0990b93c9900bab2784bef4b10f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
您最近一年使用:0次
名校
解题方法
3 . 在平面直角坐标系
中,点
,直线
,圆
.
(1)求
的取值范围,并求出圆心坐标;
(2)有一动圆
的半径为
,圆心在
上,若动圆
上存在点
,使
,求圆心
的横坐标
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f94c4f6b762fddb0e313050ef6932eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/139189550dc26d6130088799c1e65581.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1899e24c054f09b93a4455cd8229daad.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(2)有一动圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97d5efed9e0e3e08b096413fcc38dd89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2020-02-12更新
|
485次组卷
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6卷引用:宁夏石嘴山市第三中学2019-2020学年高一上学期期末数学试题
宁夏石嘴山市第三中学2019-2020学年高一上学期期末数学试题湖南省怀化市2018-2019学年高一上学期期末考试数学试题四川省眉山外国语学校2019-2020学年高二上学期期中考试数学(理)试题重庆市涪陵区涪陵高级中学校2019-2020学年高二上学期第一次诊断性考试数学试题安徽省芜湖市2019-2020学年高二上学期期末数学(理)试题(已下线)突破2.4 圆的方程(课时训练)-【新教材优创】突破满分数学之2022-2023学年高二数学重难点突破+课时训练 (人教A版2019选择性必修第一册)
名校
4 . 已知圆
和直线
,点
是直线
上的动点,过点
作圆
的两条切线
,切点是
,则
的最大值是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a984698b8d194f8013d9707e83d96d62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0e720a954e51275862bc54802091c64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c88d9142df6ba8e43c1a93bd04a1362.png)
![](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/790ef3382b1c731f2885eecfd92c2a86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb686e4f5e3938575bc547e849d5513f.png)
A.60° | B.90° | C.120° | D.150° |
您最近一年使用:0次
2020-01-18更新
|
630次组卷
|
2卷引用:宁夏银川一中2019-2020学年高一上学期期末数学试题
名校
5 . 已知一个动点
在圆C:x2+y2=36上移动,它与定点
所连线段的中点为
.
(1)设
,求点
的轨迹方程;
(2)过点
作圆C的弦,最长的弦记为
,最短的弦记为
,求四边形
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d6f5adf13b4214666292dd64b947741.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78e0b4cce429003557b051ea0fa2f7de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(1)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b516b0d53ac19e21732db1430b1b93a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e97ce3dbfb099cdc378a2f004963668a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5ec3f44cd7f4689920e5df628177737.png)
您最近一年使用:0次
名校
6 . 如图,在三棱柱ABC-A1B1C1中,
,
,
面
,
是线段
上的动点,
是
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/25/08f37b67-158a-4e6c-9141-41c33672611d.png?resizew=128)
(1)证明:
;
(2)若
且直线
与
所成的角是
,求出
的长,并求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/585045d5efe79912edc19823dfa80d82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5845ccc0d735dc14c92a8926d9b1def6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/25/08f37b67-158a-4e6c-9141-41c33672611d.png?resizew=128)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b090058790a8cfcdda6c697d5e9c99e.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a4cae354e7c18c7c8b1bae7d53bd06b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e516121599c9fcc528121c00afcf52fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04c39d0d1cbb21e6812acfd0de2aaa87.png)
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2020-01-14更新
|
292次组卷
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2卷引用:宁夏银川一中2019-2020学年高一上学期期末数学试题
7 . 三角形的三个顶点为 A(-2,4),B(-3,-1),C(1,3).
(1)求△ABC的面积S.
(2)过A作直线
,使B,C两点到
的距离相等,求直线
的方程.
(1)求△ABC的面积S.
(2)过A作直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c88d9142df6ba8e43c1a93bd04a1362.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c88d9142df6ba8e43c1a93bd04a1362.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c88d9142df6ba8e43c1a93bd04a1362.png)
您最近一年使用:0次
8 . 如图,AB是圆O的直径,PA垂直于圆O所在的平面,M是圆周上任意一点,AN⊥PM,垂足为N , AE⊥PB,垂足为E .
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/3/1bde3d78-3988-405c-9ae8-7d9424a1dfb6.png?resizew=140)
(1)求证:平面PAM⊥平面PBM.
(2)求证:
是二面角A-PB-M的平面角.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/3/1bde3d78-3988-405c-9ae8-7d9424a1dfb6.png?resizew=140)
(1)求证:平面PAM⊥平面PBM.
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c6b651a6c26c24bd84e166ac53b44c3.png)
您最近一年使用:0次
9 . 正方体ABCD-A1B1C1D1中,直线AC与直线BC1所成的角、直线AC与平面
所成的角分别为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10d8eb4a9f462ca0c1d49c3fe91e720d.png)
A.60°,45° | B.90°,45° | C.60°,30° | D.45°,60° |
您最近一年使用:0次
2020-01-14更新
|
198次组卷
|
2卷引用:宁夏银川一中2019-2020学年高一上学期期末数学试题
名校
10 . 已知椭圆
的焦距为
,短轴长为
.
(1)求
的方程;
(2)若直线
与
相交于
、
两点,求以线段
为直径的圆的标准方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f00cd04fab011e0956e347264ef4bf5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b10e8abf8690e4b129466ddb918bcc94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95bacae35b6e16a0a33c2bdc6bc07df7.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cb9ad1e34877b0db02d0219332b0f7b.png)
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c31c4f39399ec245a67db2933ed639f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cb9ad1e34877b0db02d0219332b0f7b.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/f52a58fbaf4fea03567e88a9f0f6e37e.png)
您最近一年使用:0次
2020-01-12更新
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2443次组卷
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11卷引用:宁夏吴忠中学2019-2020学年高二下学期期末考试数学(文)试题
宁夏吴忠中学2019-2020学年高二下学期期末考试数学(文)试题陕西省商洛市考试高三上学期期末教学质量检测数学(理)试题陕西省商洛市考试高三上学期期末教学质量检测数学(文)试题2020届湖北省十堰市高三年级元月调研考试文科数学试题2020届高三2月第01期(考点08)(理科)-《新题速递·数学》2020届西大附中高三11月月考数学(文)试题2020届江西省九江市十校高三下学期模拟考试数学(理)试题江西省九江市十校2019-2020学年高三模拟考试数学(文)试题黑龙江省大庆实验中学2020届高三综合训练(五)数学(文)试题(已下线)专题11 椭圆-2020-2021学年高中数学新教材人教A版选择性必修配套提升训练四川省成都市第二十中学校2022-2023学年高二下学期第一次质量检测数学试题