1 . 已知双曲线
的渐近线为
,双曲线
与双曲线C的渐近线相同,过双曲线
的右顶点的直线与
,在第一、四象限围成三角形面积的最小值为8.
(1)求双曲线
的方程;
(2)点P是双曲线
上任意一点,过点P作
依次与双曲线C和
交于A,B两点,再过点P作
依次与双曲线C和
交于E,F两点,证明:
为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0017262e45089093f70001cae2c60257.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44434b647ec546fe787e2164e0be6cd2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4c8a9c4957431681ddfc77895a88508.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4c8a9c4957431681ddfc77895a88508.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44434b647ec546fe787e2164e0be6cd2.png)
(1)求双曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4c8a9c4957431681ddfc77895a88508.png)
(2)点P是双曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4c8a9c4957431681ddfc77895a88508.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca086092226075eb257f10f674eed9b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b49ac3a8f9f4f495cbc7629eb7c855b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2868ec4ce76288fe9b77247f4f467f6.png)
您最近一年使用:0次
名校
解题方法
2 . 已知函数
的定义域为
,
,满足
,
,令
,设当
时,都有![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea944fa5b7030c92f0d06e7e15c1c135.png)
(1)计算
,并证明
在
上单调递增;
(2)对任意的
,
,总存在
,使得
成立,求t的取值范围?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d562dc22dfb3b81d0c3f88b54d063c2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f21febe8749e5e598124c2f6bb4025.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75c137b664f5c1b3368a55c3e7adb1db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5409f79d5899f4822deaf275df1739c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab409bb25958c2f01c73e26042c6f51e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea944fa5b7030c92f0d06e7e15c1c135.png)
(1)计算
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5d55ef0d1b7ea88d92fd6e1ecebb5f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d562dc22dfb3b81d0c3f88b54d063c2f.png)
(2)对任意的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/006dd721f6e19ee105cf6e3a10b69c02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d285a4c557fc9748105b62ccd94b7859.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a47fb2689296e12a46e6a9b65e74ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9e805e0506d37973afc0664ae0a6af0.png)
您最近一年使用:0次
2024-01-25更新
|
371次组卷
|
2卷引用:重庆市渝中区巴蜀中学校2023-2024学年高一上学期1月期末数学试题
名校
3 . 小红学了高一年级《基本不等式》后,高兴地告诉她正读高三的哥哥小东说:“哥哥,我知道你以前说的“基本不等式”是怎么回事了,我还可以对它扩充呢”.然后小红在草稿本上工工整整地写下了“若
,
,则
”.小东微笑着说:“恭喜你获得了新知,加油!等你上高三了还可以往这个不等式里面补充内容,看我写一个.”然后小东就把刚才小红写的内容改成了:“若
,
,
,则
”.小东看着小红崇拜的眼睛,又补充说:“虽然你现在还不能完全证明它,但是你可以用‘若
,
,
,则
’作为条件来证明另一个结论:‘若
,则
’”.
(1)请完成小东所说结论的证明,即用“若
,
,
,则
”作为条件,证明结论“若
,则
”成立;
(2)请用(1)中的结论解决问题:已知函数
有两个不同的零点
,证明
;
(3)小红成功完成(2)中的证明后,翻开哥哥小东的高三资料发现这样一道题:若函数
有两个不同的零点
,证明
.她兴奋地对哥哥说:“我发现这个题在本质上跟(2)中的题目是一模一样的!”.请问你认同小红的说法吗?写出你的观点并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67ca5fd57c2c2fcc3c7a574fdd1467d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d473e7e88342bd8cf463d2f0d644e536.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67ca5fd57c2c2fcc3c7a574fdd1467d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2958030ec9d7543dda1f529593a915e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6bf4dc2e9fea34fa1ba06d8df94b1ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67ca5fd57c2c2fcc3c7a574fdd1467d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2958030ec9d7543dda1f529593a915e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cc807f76d58df49f083de0c4a21eff3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2958030ec9d7543dda1f529593a915e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7e7ce5311b94977b94dc25a7a30b678.png)
(1)请完成小东所说结论的证明,即用“若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67ca5fd57c2c2fcc3c7a574fdd1467d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2958030ec9d7543dda1f529593a915e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cc807f76d58df49f083de0c4a21eff3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2958030ec9d7543dda1f529593a915e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7e7ce5311b94977b94dc25a7a30b678.png)
(2)请用(1)中的结论解决问题:已知函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d34a824ee29777ed157f992027d9b39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03ca13a93b5f401c0d39ba52b0cffcb0.png)
(3)小红成功完成(2)中的证明后,翻开哥哥小东的高三资料发现这样一道题:若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e74da4b06c434c46d5a8958ad77f2592.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b4900c67f4b57fa430c4bd863f8e896.png)
您最近一年使用:0次
名校
解题方法
4 . (1)不等式
对任意的
恒成立,求m的取值范围;
(2)当
,求证:
.
(参考数据:
,
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c03b1b7812bd364bbcfc6acea45f9182.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/882b660047bb6ded500cedba57958e00.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69ef0632493b910258a1f59c8a29aa1e.png)
(参考数据:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70559d4c1408ed986b4ba646d045d023.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c6338466609519ed240407ebe9959af.png)
您最近一年使用:0次
5 . 已知抛物线
的准线
交
轴于
,过
作斜率为
的直线
交
于
,过
作斜率为
的直线
交
于
.
(1)若抛物线的焦点
,判断直线
与以
为直径的圆的位置关系,并证明;
(2)若
三点共线,
①证明:
为定值;
②求直线
与
夹角
的余弦值的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f32e577ae1f4449efbd64c1199efe7a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a436db19eb954d31075d5398f1b92ecd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6defc43285a40f7ccb74c1cc04265eba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bcd8ee2d8367c167d6ae0abc741b6b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39acab3cfb59bfc9591371721ab01d93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f96c1f9f575ea0fd1487c9f4bb7745af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/423b7ae39db552e60ee8b1d27312306f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bcd8ee2d8367c167d6ae0abc741b6b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52041559f8fee18bfa3e2e2ac07c3bfa.png)
(1)若抛物线的焦点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b0d4e207a27fc83c2d7bf247841a788.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31e55e398e8520d8a36fb5a625a085b8.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/939658de45d1e76de0a85e1c50d29e12.png)
①证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29212e455dd6df5379ae67f379a32158.png)
②求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
您最近一年使用:0次
2023-12-22更新
|
575次组卷
|
2卷引用:重庆市第一中学校2023-2024学年高二上学期期末模拟数学试题
名校
6 . 如图,圆心为C的定圆的半径为3,A,B为圆C上的两点.
(1)若
,当k为何值时,
与
垂直?
(2)若
的最小值为2,求
的值;
(3)若G为
的重心,直线l过点G交边
于点P,交边
于点Q,且
,
.证明:
为定值.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/7/9785ae46-35c8-4c6f-8312-728689c016ae.png?resizew=154)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d33d7bbd89950f7ba1bf5a855b0ab9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1144b19a3d032433b77c8e07dca969a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b683b0c4ccd5747b8c41d4ed30d1e088.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7464972070329b8372b7c77885f77a12.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d401876b078e318413b8ad876c54b7be.png)
(3)若G为
![](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/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f73ba7fd5c3f0fbfb7325dbc1e1c1879.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e6f8a5f095834d20f66ffbd1cdd40bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/587b693b82241eb9c32cdbb96c209f33.png)
您最近一年使用:0次
2023-07-06更新
|
631次组卷
|
2卷引用:重庆市渝中区等4区2022-2023学年高一下学期期末数学试题
名校
解题方法
7 . 我们把和两条异面直线都垂直相交的直线叫做两条异面直线的公垂线.如图,在菱形
中,
,将
沿
翻折,使点A到点P处.E,F,G分别为
,
,
的中点,且
是
与
的公垂线.
(1)证明:三棱锥
为正四面体;
(2)若点M,N分别在
,
上,且
为
与
的公垂线.
①求
的值;
②记四面体
的内切球半径为r,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f945a69cf7e8213e50622125cde652f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab2a2834d80ff574e79eae8ca8d4e94f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c63e36329f5e0979f5ee776ac5d06327.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/7/36d7309a-d789-4b0d-bbdc-a09e1456bdf9.png?resizew=341)
(1)证明:三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08a9ec3b527947cad9caa4537e0cb7e7.png)
(2)若点M,N分别在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc5adb5eb60ae4435a12d93854066298.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc5adb5eb60ae4435a12d93854066298.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
①求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51583e34d76abf46a39b56014a536208.png)
②记四面体
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/922b1e3f3948b044ff8f53af2aa1f038.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45acf3747141ec164fcf0dff92439fd1.png)
您最近一年使用:0次
2023-07-04更新
|
2104次组卷
|
9卷引用:重庆市南开中学校2022-2023学年高一下学期期末数学试题
重庆市南开中学校2022-2023学年高一下学期期末数学试题四川省成都市2023-2024学年高二上学期九月调研考试(校级联考)数学试题四川省成都市树德中学2023-2024学年高二上学期10月阶段性测试数学试题(已下线)专题01 空间向量及其运算压轴题(5类题型+过关检测)-【常考压轴题】2023-2024学年高二数学上学期压轴题攻略(人教A版2019选择性必修第一册)(已下线)第一章 空间向量与立体几何(压轴题专练,精选20题)-2023-2024学年高二数学单元速记·巧练(人教A版2019选择性必修第一册)(已下线)第3章 空间向量及其应用(压轴题专练)-2023-2024学年高二数学单元速记·巧练(沪教版2020选择性必修第一册)(已下线)第3章 空间向量及其应用 单元综合检测(难点)-2023-2024学年高二数学同步精品课堂(沪教版2020选择性必修第一册)(已下线)第三章 折叠、旋转与展开 专题一 平面图形的翻折、旋转 微点4 翻折、旋转问题中的最值(一)(已下线)第四章 立体几何解题通法 专题二 体积法 微点2 体积法(二)【基础版】
8 . 已知函数
,其中
为自然对数的底数,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11204e2fb6e560bf7a4ca26eaebfc526.png)
(1)若对
,
恒成立,求实数
的值;
(2)在(1)的条件下,
(i)证明:
有三个根
;
(ii)设
,请从以下不等式中任选一个进行证明:
①
;②
.
参考数据:
,
,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e20a21999ea818acdfb48d3641f70d3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/041a7c8fc017f596542c5e6ec7d1c40b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11204e2fb6e560bf7a4ca26eaebfc526.png)
(1)若对
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ad5fe274cfc8da2dacfb65801f344ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e9c599e8d420006448905acec2b8234.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)在(1)的条件下,
(i)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54866b75eec154dad01cf0d914708149.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05b8ec9d4206ea66a02de5c4a1e1e911.png)
(ii)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1310a7a80d1f8751a3f8cafe7f8c8b4.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10f5386c00768eb3d5cde11383cff0a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/319905307025d367558a59877837c331.png)
参考数据:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/070f72497850d3f2b5815b363cf459b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6782279b69a72f9ff98648774bf9033d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffaf85e9c942f037e38d5b87f9f28cb5.png)
您最近一年使用:0次
名校
解题方法
9 . 对于两个函数:
和
,
的最大值为M,若存在最小的正整数k,使得
恒成立,则称
是
的“k阶上界函数”.
(1)若
,
是
的“k阶上界函数”.求k的值;
(2)已知
,设
,
,
.
(i)求
的最小值和最大值;
(ii)求证:
是
的“2阶上界函数”.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a1cfb60420ff7e72c1b9d64f69ae063.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d6afd1b3aeae1bd415dba90e50c001c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ffea0f7bb26c02be91008a3a992a27b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea5289677c3bf66194c475c4c44f4a05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f06f45220c23094a3d9ef53b54b89d24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b2bc8d66faac1a06acfec68e28086bf.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81b89d55ca6a541bce15e141a7e38285.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66f0ca536621ec8db02707ba65917029.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36ff2689759a35f3a8030b02be7a22c3.png)
(i)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0eb7df298a9364b36e079a61caec815c.png)
(ii)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0eb7df298a9364b36e079a61caec815c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e49794721f5504dd828acf49be37ff42.png)
您最近一年使用:0次
2022-01-24更新
|
1603次组卷
|
2卷引用:重庆市巴蜀中学2021-2022学年高一上学期期末数学试题
名校
10 . 三棱锥
中,
,
,
,直线
与平面
所成的角为
,点
在线段
上.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/28/1401ce1c-58c3-4119-8bb6-4cd452cd97c2.png?resizew=160)
(1)求证:
;
(2)若点
在
上,满足
,点
满足
,求实数
使得二面角
的余弦值为
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/463c7753d6f7614f90b19245bb3e439e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1affed1ad8e53a73308c85849a72444.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cbb05b8b630052ff544249ebd72d95d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d88591679796c52024d11c4de641bdb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/28/1401ce1c-58c3-4119-8bb6-4cd452cd97c2.png?resizew=160)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70734a8e672376bb0bd1522e229f86a2.png)
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4bb04187b181054c7ddc7f0e35e3e5d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c49e8906f0de208b36a18e448f7ecc7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/445b51117626fbd3373e32acc514c64b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d33adb74906403b0b00fcbd9fa691d8b.png)
您最近一年使用:0次
2022-01-21更新
|
667次组卷
|
4卷引用:重庆市巴蜀中学2021-2022学年高二上学期期末数学试题