解题方法
1 . 如图,在直三棱柱
中,
分别是
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/20/29cfc27b-211d-4f10-bad7-e301920f0310.png?resizew=164)
(1)求证:
平面
;
(2)求点
到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/261398e6589ffbbdefc7797377d00453.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a578091abee9743f254fd0d4bc00af6.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/20/29cfc27b-211d-4f10-bad7-e301920f0310.png?resizew=164)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7592c4f01c8e06c7ee90df5b9413a9f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d9a8181f7a7fe7f3fac872ce9534f15.png)
(2)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2730b513bd3359c3dfe6567e04f5ef9.png)
您最近一年使用:0次
2018-01-02更新
|
506次组卷
|
3卷引用:湖北省稳派教育2018届高三上学期第二次联考数学(文)试题
解题方法
2 . 如图,直三棱柱
中,
,
,
,
分别为
和
上的点,且
.
![](https://img.xkw.com/dksih/QBM/2017/12/7/1833505809293312/1834913049845760/STEM/29872d4c6093441c8e6e3f8f3eb319a2.png?resizew=188)
(1)当
为
中点时,求证:
;
(2)当
在
上运动时,求三棱锥
体积的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71f2185273bf04c11118c7954f7ec822.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a3c5d2cbe5cfa47fde68ff3b5b81469.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc2e265db16f0c5d41a139d9243b8ab2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6655cc150ddc9deba2254780984d0024.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9528fa70095e588e324764d2b9d4a5bd.png)
![](https://img.xkw.com/dksih/QBM/2017/12/7/1833505809293312/1834913049845760/STEM/29872d4c6093441c8e6e3f8f3eb319a2.png?resizew=188)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78d1a60d31ddfd07fef3bd84788363e5.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8811df737c613addeaa0c1372c96b24.png)
您最近一年使用:0次
解题方法
3 . 如图(1)所示,已知四边形
是由
和直角梯形
拼接而成的,其中
.且点
为线段
的中点,
,
.现将
沿
进行翻折,使得二面角
的大小为
,得到图形如图(2)所示,连接
,点
、
分别在线段
、
上.
![](https://img.xkw.com/dksih/QBM/2017/11/17/1819261664854016/1822002868043776/STEM/db79e7c27d9644dcb42b8396082a0474.png?resizew=147)
![](https://img.xkw.com/dksih/QBM/2017/11/17/1819261664854016/1822002868043776/STEM/2beab96c173645018637e5b1a04e496e.png?resizew=191)
(1)证明:
;
(2)若三棱锥
的体积为四棱锥
体积的
,求点
到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/481cb1bbc008a2d103e90b1e1efaf14f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d75a6a86f42c10a278c4089ae12baf5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2585b208f5669f818d58531d8fb9caf8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/defa5b53043ae802bb1af7d14374406d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3dd014107b5a250419a1960570d0cdc2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72e49817548cb45b3d1e58570644c6fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7fe637f1537666932491637f9b3d3ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c2bc5e50b8dfa02601c70822252854a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d4db9b82b67efe45a02fca32bfcf5dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c2bc5e50b8dfa02601c70822252854a.png)
![](https://img.xkw.com/dksih/QBM/2017/11/17/1819261664854016/1822002868043776/STEM/db79e7c27d9644dcb42b8396082a0474.png?resizew=147)
![](https://img.xkw.com/dksih/QBM/2017/11/17/1819261664854016/1822002868043776/STEM/2beab96c173645018637e5b1a04e496e.png?resizew=191)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94e8a6ed9efd3ab94d547e2209adc8eb.png)
(2)若三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4a79fe6289d42058b781171fbd0b92e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/faeb97acf19bd3b2c6c77c2814df4d2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d33adb74906403b0b00fcbd9fa691d8b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
您最近一年使用:0次
解题方法
4 . 如图,直三棱柱
中,
,
,
,外接球的球心为
,点
是侧棱
上的一个动点.有下列判断:
① 直线
与直线
是异面直线;②
一定不垂直
;
③ 三棱锥
的体积为定值; ④
的最小值为
.
![](https://img.xkw.com/dksih/QBM/2017/8/30/1763419974787072/1766336092880896/STEM/c5e1f9af-b9bb-4c30-af44-4f385fb61ef5.png?resizew=281)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92535536bd3c2761724fd058427f95a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/829018a6ca0aff95d89e3f7cd943274e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45acdbac251ca6b76a166c1242e71df9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
① 直线
![](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/9ce1b066f8869d0ff4513f7a99745125.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24bb49fdc6b6bbb2449fdf8a0de769d3.png)
③ 三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02dd76b7dbe2d9ea408dcac787f89d2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f998e8cbd8c96e88a6825bf610021970.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95bacae35b6e16a0a33c2bdc6bc07df7.png)
![](https://img.xkw.com/dksih/QBM/2017/8/30/1763419974787072/1766336092880896/STEM/c5e1f9af-b9bb-4c30-af44-4f385fb61ef5.png?resizew=281)
其中正确的个数是
A.1 | B.2 | C.3 | D.4 |
您最近一年使用:0次
解题方法
5 . 如图,在长方体
中,
,
,点
是线段
中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/26/9cc955a8-b8f8-4540-a2b0-928476f9be61.png?resizew=234)
(1)求证:
;
(2)求
点到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7d64fc81c857b124268609a8beb77b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/26/9cc955a8-b8f8-4540-a2b0-928476f9be61.png?resizew=234)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac8079b402caca88f1834ec95b6d6527.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e4755dc59cb5a03cd39879bc80fdbb9.png)
您最近一年使用:0次
名校
6 . 在矩形
中,
,现将
沿矩形的对角线
进行翻折,在翻折的过程中,给出下列结论:
①存在某个位置,使得直线
与直线
垂直;
②存在某个位置,使得直线
与直线
垂直;
③存在某个位置,使得直线
与直线
垂直.
其中正确结论的序号是________________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d09a9a6f020159406608000cf93d4fa9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab2a2834d80ff574e79eae8ca8d4e94f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
①存在某个位置,使得直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
②存在某个位置,使得直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
③存在某个位置,使得直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
其中正确结论的序号是
您最近一年使用:0次
2017-02-24更新
|
1055次组卷
|
13卷引用:2017届湖北省武汉市武昌区高三1月调研考试文数试卷
2017届湖北省武汉市武昌区高三1月调研考试文数试卷湖北省浠水县实验高级中学2017届高三数学(文)测试题(2017年1月16日)(已下线)二轮复习 【理】专题12 空间的平行与垂直 押题专练人教A版高中数学 高三二轮(理)专题12 点、直线、平面之间的位置关系 测试人教A版 全能练习 必修2 第二章 第三节 2.3.3 直线与平面垂直的性质湖南省衡阳市第八中学2019-2020学年高一上学期第三次考试数学试题(已下线)专题8.4 直线、平面垂直的判定与性质-2021年高考数学(文)一轮复习-题型全归纳与高效训练突破(已下线)专题8.4 直线、平面垂直的判定与性质-2021年高考数学(理)一轮复习-题型全归纳与高效训练突破(已下线)专题8.5 直线、平面垂直的判定及性质 (精练)-2021年高考数学(理)一轮复习讲练测(已下线)专题8.5 直线、平面垂直的判定及性质(精练)-2021年高考数学(理)一轮复习学与练(已下线)第36讲 直线、平面垂直的判定及性质(练) — 2022年高考数学一轮复习讲练测(课标全国版)(已下线)专题8.5 直线、平面垂直的判定及其性质(练)【理】-《2020年高考一轮复习讲练测》江苏省徐州市沛县第二中学2023-2024学年高三上学期期初测试数学试题
7 . 如图,在三棱柱
中,底面
是边长为2的等比三角形,过
作平面
平行于
,交
于
点.
![](https://img.xkw.com/dksih/QBM/2016/8/18/1572984524709888/1572984530624512/STEM/f3960477e02145de95014f5a34e28a6d.png)
(1)求证:
;
(2)若四边形
是正方形,且
,求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57f47d6a88e962cd790d2f159c021ec1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd936a2405709574af0a73543d94ad9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ee8456443402a25b1e25d35ff7e1c98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74bca84ad86c648d3bb20c8909c8da3f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d8772aa893a9c1d40f714cb25701701.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://img.xkw.com/dksih/QBM/2016/8/18/1572984524709888/1572984530624512/STEM/f3960477e02145de95014f5a34e28a6d.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/971cd0358b49f1661adc674801bd6ecb.png)
(2)若四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e168672b47d7e64dc1b404f8882c7dcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35c5aa738865bade7eb71bed5b7e4cd1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0acc78422fa848680320ebb511907fa4.png)
您最近一年使用:0次
8 . 如图,四棱锥
中, 底面
是直角梯形,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb5270e870f1f12b5d138954996af4f7.png)
∥
,
,
,侧面
⊥底面
,且
是以
为底的等腰三角形.
![](https://img.xkw.com/dksih/QBM/2016/7/12/1572916305829888/1572916311875584/STEM/c520f0682959484c8c3918a621e7e594.png)
(1)证明:
⊥
;
(2)若三棱锥
的体积等于
,问:是否存 在过点
的平面
,分别交
、
于点
,使得平面
∥平面
?若存在,求出
的面积;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6153163fecdf3f410411048428ccaef5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb5270e870f1f12b5d138954996af4f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27db558e8db4c957654c8e5cecd2d2dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/037b342a682cbd4241855a243da3c016.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/159c8157f320a7bb15172236c909f26c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://img.xkw.com/dksih/QBM/2016/7/12/1572916305829888/1572916311875584/STEM/c520f0682959484c8c3918a621e7e594.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
(2)若三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5339de865446d8cae847dd8669db5f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70db40c42655327adee01caedfc9d50c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70db40c42655327adee01caedfc9d50c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ad2e95e34976fcd6dbe57734119710a.png)
您最近一年使用:0次
2012·湖北·二模
9 . 如图,已知直线
,垂足为
,在
中,
,
,
,该直角三角形在空间做符合以下条件的自由运动:①
,②
则
、
两点间的最大距离为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a48600716d7af8b4e65d4933c337606b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f8f88798ec42a58dccd212586382b23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa7aeb2a8d1437eeb4482c3b6ad9f315.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bb5b12692517a39c320f99a479eb055.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06201e4f55b78d8b30afb257d5a1b16b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a30262f17d1e521b48d773da22ebf452.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4cc2f3dcb248fc764614be3a9ddd25b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/13/5caa080a-cca9-4b2b-a319-72639ca49950.png?resizew=210)
您最近一年使用:0次
2012·湖北襄阳·一模
名校
10 . 如图,三棱台
的底面是正三角形,平面
平面
,
,
.
![](https://img.xkw.com/dksih/QBM/2012/3/14/1570802134179840/1570802139783168/STEM/55bec17d-1890-42ff-b8e1-a8313647fb49.png?resizew=191)
(Ⅰ)求证:
;
(Ⅱ)若
和梯形
的面积都等于
,求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45378fbdfb5fe305c71893a91435854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3d7090639341730951c1bc3c9b6164e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/616b46476c1f1d22e3a21d6fa33a3400.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc335e69ac1151ff812921e9a8f2ec37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cf5b86308e9f777a6611503ba8d0e9e.png)
![](https://img.xkw.com/dksih/QBM/2012/3/14/1570802134179840/1570802139783168/STEM/55bec17d-1890-42ff-b8e1-a8313647fb49.png?resizew=191)
(Ⅰ)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bc0666d63e6c13fa6a19b59523aa1eb.png)
(Ⅱ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/616b46476c1f1d22e3a21d6fa33a3400.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/661f3d965e8c6043e3d1cd5dbc270270.png)
您最近一年使用:0次
2016-12-01更新
|
1773次组卷
|
9卷引用:2012届湖北省襄阳市高三3月调研考试数学理科试卷
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