名校
解题方法
1 . 对于一组向量
,
,
,
,
(
且
),令
,如果存在
,使得
,那么称
是该向量组的“1向量”.
(1)设
,
,若
是向量组
,
,
的“1向量”,求实数x的取值范围;
(2)若
,
,则向量组
,
,
,
,
是否存在“1向量”?若存在,求出“1向量”;若不存在,请说明理由;
(3)已知
,
,
均是向量组
,
,
的“1向量”,其中
,
.设在平面直角坐标系中有一点列
,
,
,
,
(
且
)满足:
为坐标原点,
,且
与
关于点
对称,
与
关于点
对称,求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d344174267f996c7cefecfd6985d380.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2e900404ba71110c5861ced9634646f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67dbe2e19d8960789ec873b687998b58.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daa5e9bd516f6282483b92cfe6074623.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96948298d84df24e10c9a1ed3da62340.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bd2c3166d0bfd9e64bdc85081445e95.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/527093b2ec760913d0dccff8a099248b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95f323477e57003503694207cb16a685.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6bf5df9243d25b1fd1ef84e4a2e1479.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a36cd1fbc82360a6f0f422591ac05cd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de009d9df65374c870a4012cf5db28df.png)
(1)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3d9b654783082de6e90d338c5c454c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a37a59558292ad6b3d0978bfd7484990.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67dbe2e19d8960789ec873b687998b58.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d344174267f996c7cefecfd6985d380.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2e900404ba71110c5861ced9634646f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67dbe2e19d8960789ec873b687998b58.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74da885934fa5f71f25b65d46346920c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a37a59558292ad6b3d0978bfd7484990.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d344174267f996c7cefecfd6985d380.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2e900404ba71110c5861ced9634646f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67dbe2e19d8960789ec873b687998b58.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daa5e9bd516f6282483b92cfe6074623.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fbe509a56b477c79a288a227a737996.png)
(3)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d344174267f996c7cefecfd6985d380.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2e900404ba71110c5861ced9634646f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67dbe2e19d8960789ec873b687998b58.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d344174267f996c7cefecfd6985d380.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2e900404ba71110c5861ced9634646f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67dbe2e19d8960789ec873b687998b58.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9112bd58ae60d2516b67de408465ccd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ca270240c9c1d115d3c60b58d1556c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2708fa6298e52f617383efc175b71ddc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b9cb8e6ff801523b0304576cd69fd2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/797e67927616b141ed7c6b83f8b6f4fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daa5e9bd516f6282483b92cfe6074623.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6f88df6d5230b66381897f960f5f512.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b6b6467f94bbc9916e47bade380929b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f8101a8f0dfea30e5e05aa87c6abdcc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2708fa6298e52f617383efc175b71ddc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93d1fb46bb932bb6d0edb7617e1ed170.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bb85da6db44b415f254d4ca0075ad07.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36f306a75051c9a11c92aa30a836a016.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2708fa6298e52f617383efc175b71ddc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2b5ea93b62e9b06f0060ab0d09e6633.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fc4dc226800792c55eaa32134041837.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b9cb8e6ff801523b0304576cd69fd2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f13215fec5fb9d2a4f19a60ddc7fdb70.png)
您最近一年使用:0次
名校
解题方法
2 . 对于一组向量
,
,
,…,
,(
且
),令
,如果存在
,使得
,那么称
是该向量组的“长向量”.
(1)设
,
且
,若
是向量组
,
,
的“长向量”,求实数x的取值范围;
(2)若
,
且
,向量组
,
,
,…,
是否存在“长向量”?给出你的结论并说明理由;
(3)已知
,
,
均是向量组
,
,
的“长向量”,其中
,
.设在平面直角坐标系中有一点列
,
,
,…,
满足,
为坐标原点,
为
的位置向量的终点,且
与
关于点
对称,
与
(
且
)关于点
对称,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d344174267f996c7cefecfd6985d380.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2e900404ba71110c5861ced9634646f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67dbe2e19d8960789ec873b687998b58.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4a47bdc03f0ced8245c526c81593363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd4613271f782a90ab580131d09d03d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bcfc48f9bc23cc43085bdb910e7a136.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92c1d22f02fa7f8f1ff1db3f322a9fc5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e955b4525bb55e72c131d829406df508.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c98c622975aaf93ed0c63be1294d2170.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f50ecfa147131019f969c3bc78169f7.png)
(1)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c33a899454f0d42377d4ea0324dd812.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd4613271f782a90ab580131d09d03d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de8610232c77741a37463feba1a66c94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67dbe2e19d8960789ec873b687998b58.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d344174267f996c7cefecfd6985d380.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2e900404ba71110c5861ced9634646f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67dbe2e19d8960789ec873b687998b58.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74da885934fa5f71f25b65d46346920c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd4613271f782a90ab580131d09d03d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de8610232c77741a37463feba1a66c94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d344174267f996c7cefecfd6985d380.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2e900404ba71110c5861ced9634646f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67dbe2e19d8960789ec873b687998b58.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a164fd6439284f1ff4a9b1f02d609f7.png)
(3)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d344174267f996c7cefecfd6985d380.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2e900404ba71110c5861ced9634646f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67dbe2e19d8960789ec873b687998b58.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d344174267f996c7cefecfd6985d380.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2e900404ba71110c5861ced9634646f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67dbe2e19d8960789ec873b687998b58.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9112bd58ae60d2516b67de408465ccd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ca270240c9c1d115d3c60b58d1556c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2708fa6298e52f617383efc175b71ddc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b9cb8e6ff801523b0304576cd69fd2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/797e67927616b141ed7c6b83f8b6f4fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf83e20035c3afd6d26ebfd53d768a70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2708fa6298e52f617383efc175b71ddc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b9cb8e6ff801523b0304576cd69fd2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82dc7540c4cdee4c34a9311c79b35d95.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fc4dc226800792c55eaa32134041837.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36f306a75051c9a11c92aa30a836a016.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2708fa6298e52f617383efc175b71ddc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2b5ea93b62e9b06f0060ab0d09e6633.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fc4dc226800792c55eaa32134041837.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e10f2f74e201f77f853e9ed9078615c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f0d68648b10fce54dfc19c5ee60086d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b9cb8e6ff801523b0304576cd69fd2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8e57169c0d88ae0b680636653f4c860.png)
您最近一年使用:0次
2024-03-26更新
|
753次组卷
|
6卷引用:上海市建平中学2023-2024学年高一下学期第一次教学质量检测(3月月考)数学试卷
上海市建平中学2023-2024学年高一下学期第一次教学质量检测(3月月考)数学试卷安徽省安庆市第一中学2023-2024学年高一下学期第一次阶段检测数学试题(已下线)模块三专题4大题分类练(专题3 平面向量数量积)【高一下人教B版】(已下线)模块四 专题4 重组综合练(安徽)(已下线)期末测试卷01-《期末真题分类汇编》(上海专用)(已下线)考题猜想03 平面向量-期末考点大串讲(沪教版2020必修二)
名校
解题方法
3 . 固定项链的两端,在重力的作用下项链所形成的曲线是悬链线.1691年,莱布尼茨等得出“悬链线”方程
,其中
为参数.当
时,就是双曲余弦函数
,悬链线的原理运用于悬索桥、架空电缆、双曲拱桥、拱坝等工程.类比三角函数的三种性质:①平方关系:
;②两角和公式:
,③导数:
定义双曲正弦函数
.
(1)直接写出
,
具有的类似①、②、③的三种性质(不需要证明);
(2)当
时,双曲正弦函数
的图像总在直线
的上方,求直线斜率
的取值范围;
(3)无穷数列
满足
,
,是否存在实数
,使得
?若存在,求出
的值,若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/226ad7337354c5ee27aed367ac7e897b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4580cc037c0c760c728cdbb74a8154c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ed02acb0c7b4e40c26f6760627a033e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9af7ca3fcd9a43d520ed650b80ef2dad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c960a553e62119bd03b43eb3efa4112.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bf160d9a666a2f63ccc608836ae6eb4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cbcc2e6bbcbd9344009a0b032a42fbeb.png)
(1)直接写出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c540f798ab69463cf35af2772a3a19cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b1ee2c2965ab4a51d26062fb0e665a5.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba71c207f3a94133eb53ea1b05e4b393.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac02a054bd0771a56987af33454baaea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(3)无穷数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7fab51121848ce166035ceab6f4e00b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ecf3a1fecf89a37a677393d0bfe27b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b0d21e828e1f9407851c80d0f6e1b13.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2024-03-19更新
|
873次组卷
|
3卷引用:上海市四校(复兴高级中学、松江二中、奉贤中学、金山中学)2024届高三下学期3月联考数学试卷
上海市四校(复兴高级中学、松江二中、奉贤中学、金山中学)2024届高三下学期3月联考数学试卷(已下线)上海市四校(复兴高级中学、松江二中、奉贤中学、金山中学)2024届高三下学期3月联考数学试题变式题17-21上海市建平中学2024届高三下学期三模考试数学试题
名校
4 . 如果函数
的导数
,可记为
.若
,则
表示曲线
,直线
以及
轴围成的“曲边梯形”的面积.
(1)若
,且
,求
;
(2)已知
,证明:
,并解释其几何意义;
(3)证明:
,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46be55c8f2760d6db125f46691a3de48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83d4d758bac9a7272c1d40a5ea4176c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edd8f5b33be6db5be0833f1801bd7a46.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e9c599e8d420006448905acec2b8234.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c6a5e6776e205fb09d8a689e1638947.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/436ff3cf58de28b55f7605675a47d818.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8ed0afb829f4d5c61ce89a556376d93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a0dc2a031743126b8b4fabb843a55bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46be55c8f2760d6db125f46691a3de48.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bc282dae4ac9132196ac5d13f63b901.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c38abf9dbef1c45d9fd8143798fa0ea.png)
(3)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e59176a49cf2e21c94cf550888de88c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a37a59558292ad6b3d0978bfd7484990.png)
您最近一年使用:0次
2024-02-20更新
|
2437次组卷
|
7卷引用:重庆市第八中学校2023-2024学年高三下学期入学适应性考试数学试题
重庆市第八中学校2023-2024学年高三下学期入学适应性考试数学试题(已下线)压轴题函数与导数新定义题(九省联考第19题模式)练(已下线)微考点2-5 新高考新试卷结构19题压轴题新定义导数试题分类汇编湖北省十一校2024届高三联考考后提升数学模拟训练一湖北省黄冈市浠水县第一中学2024届高三下学期第三次高考模拟数学试题(已下线)第5套 新高考全真模拟卷(二模重组)(已下线)压轴题01集合新定义、函数与导数13题型汇总-2
解题方法
5 . “奔驰定理”因其几何表示酷似奔驰的标志得来,是平面向量中一个非常优美的结论.奔驰定理与三角形四心(重心、内心、外心、垂心)有着神秘的关联.它的具体内容是:已知M是
内一点,
,
,
的面积分别为
,
,
,且
.以下命题正确的有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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A.若![]() ![]() |
B.若M为![]() ![]() |
C.若M为![]() ![]() ![]() |
D.若![]() ![]() ![]() ![]() |
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解题方法
6 . 在锐角
中,角
的对边分别为
,且
的面积
,则
的取值范围为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
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A.![]() | B.![]() | C.![]() | D.![]() |
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2023-10-19更新
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12卷引用:湖北省腾云联盟2023-2024学年高三上学期10月联考数学试题
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7 . 已知函数
.
(1)求函数
的单调递增区间;
(2)若
,存在
,对任意
,有
恒成立,求
的最小值;
(3)若函数
在
内恰有2023个零点,求
与
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2594baf2181f6fe3c8c6ab03025ad5d9.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c64577552ee95bfce0c11e4f24dc1699.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e5223ece2f8f76850c49e2505304532.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc6abf3f9b0ebcdc47a028c781b7edb9.png)
(3)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1617144e812815a6963c0a03725cd463.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56b859c06fb2c7f9e8685e3adf8cfbf8.png)
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9卷引用:江西省上饶市2022-2023学年高一下学期期末教学质量测试数学试题
江西省上饶市2022-2023学年高一下学期期末教学质量测试数学试题辽宁省沈阳市东北育才学校少儿部2023-2024学年高三上学期第一次模拟考试数学试题江西省都昌县第一中学2023-2024学年高二上学期入学考试数学试题(已下线)第五章 三角函数(压轴题专练)-速记·巧练(人教A版2019必修第一册)(已下线)专题5.11 三角函数全章综合测试卷(提高篇)-举一反三系列(已下线)高一上学期期末数学试卷(提高篇)-举一反三系列(已下线)高一上学期期末考试解答题压轴题50题专练-举一反三系列(已下线)福建省部分学校教学联盟2023-2024学年高一下学期开学质量监测数学试题(已下线)专题04 三角函数恒等变形综合大题归类 -期末考点大串讲(苏教版(2019))
8 . 定义在
上的函数
的导函数为
,且
,若
,
,
,则下列不等式一定成立的是( )
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A.![]() | B.![]() |
C.![]() | D.![]() |
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5卷引用:四川省营山县第二中学2023届高三第六次高考模拟检测数学(理科)试题
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解题方法
9 . 如图,斜三棱柱
中,底面
是正三角形,
分别是侧棱
上的点,且
,设直线
与平面
所成的角分别为
,平面
与底面
所成的锐二面角为
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b199a99e53d67ff4abf233930961a29.png)
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A.![]() |
B.![]() |
C.![]() |
D.![]() |
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11卷引用:浙江省绍兴市柯桥区2022届高三下学期5月第二次适应性考试数学试题
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解题方法
10 . 已知
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eeec181a21ac3dca9904539ed4489fd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50e0f946d2e56655d36d01d2716720a.png)
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