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1 . 在
中(a,b,c分别为角
的对边),若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5f1e5d29de6e4d72bfed62d9c14dde5.png)
________ ,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4756dc11da0910b70e3ca3e4cb11aab.png)
_________________
![](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/6402fcab7456832ab9ac4109aab99ea9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5f1e5d29de6e4d72bfed62d9c14dde5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4756dc11da0910b70e3ca3e4cb11aab.png)
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解题方法
2 . 在△
中,
是边
的中点,
是线段
的中点.设
,
,记
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bf5c1d124e8e023fe8e8c5ef3412813.png)
__________ ;若
,△
的面积为
,则
的最小值为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7b9d8a08fc52c31cc1a7f527d18b55c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f386f5b56b07b96f2600da1be15414a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc51bdc8c2c18379db1affbb06f8923f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bf5c1d124e8e023fe8e8c5ef3412813.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c06393c604df2200ce9fd4bc9e67c2ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12e6f0e94393fc6bbd9b4b83ede534ac.png)
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3 . 已知集合
,其中
且
,若对任意的
,都有
,则称集合A具有性质
.
(1)集合
具有性质
,则
的最小值__________ ;
(2)已知A具有性质
,若
,则
的最大正整数为_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/892dee02e1d092169603dd5d14f54339.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d290a4927c50661098e2fbea58d77b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b80b8f7dbceb91cbc1c2845cf355714.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9d41b6356cad22d0cba60be8f9984b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd24a572b923f59906ebc90d3aa311cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5e86a882ef57f44f0ad22836079afe1.png)
(1)集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7372d99239161e3b340207bd0949ea0e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32efe4eff75508cb93e828c735dcb695.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)已知A具有性质
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/353433462b58fe2eba495f2589b81380.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd7484924caa71b21fe45e373385f30a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
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解题方法
4 . 已知函数.若
,则
的零点为
有两个零点
,则
的最小值为
您最近一年使用:0次
2024-03-17更新
|
398次组卷
|
3卷引用:海南省琼海市嘉积中学2023-2024学年高一下学期第一次(3月)月考数学试题
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解题方法
5 . 若
的面积为
,且
为钝角,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce2a8bf5e05a07c93a7104839fc21849.png)
______ ;
的取值范围是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8db58deac836e865ab6ab5a84b7804ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/194741f4d2ae7ee44cafca780361446a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce2a8bf5e05a07c93a7104839fc21849.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99ea513ef4c8fc4d8c31eff498740680.png)
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2024-03-10更新
|
1029次组卷
|
5卷引用:海南省琼海市嘉积中学2023-2024学年高一下学期高中教学第二次大课堂练习数学试题
海南省琼海市嘉积中学2023-2024学年高一下学期高中教学第二次大课堂练习数学试题北京市平谷区2023-2024学年高三下学期质量监控(零模)数学试卷北京市平谷区2024届高三下学期质量监控(零模)数学试卷(已下线)6.4.3余弦定理、正弦定理(第2课时)(已下线)第六章 本章综合--数学思想训练【第二练】“上好三节课,做好三套题“高中数学素养晋级之路
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解题方法
6 . 某中学开展“劳动创造美好生活”的劳动主题教育活动,展示劳动实践成果并进行评比,某学生设计的一款如图所示的“心形”工艺品获得了“十佳创意奖”,该“心形”由上、下两部分组成,并用矩形框
虚线
进行镶嵌,上部分是两个半径都为
的半圆,
分别为其直径,且
,下部分是一个“半椭圆”,并把椭圆的离心率叫做“心形”的离心率.
,则当该矩形框面积最大时,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/258e40e3883271c3580c1d3c805dcac6.png)
__________ ;
(2)若
,图中阴影区域的面积为
,则该“心形”的离心率为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd995178601c2ad7b40f973d268c7bb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04582116cd765fcc5a52f44279ad6c94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11bc05f41215f9894e11d1df0465751a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d578394cd8e4d7a705599269c512960.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ce072bcd423b56c827e40f0b731de85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8da45c443af7994a26ffa9d8894e7262.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/258e40e3883271c3580c1d3c805dcac6.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7551011cfb75b26f35b07d6617c6a18b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df9eb8f0efaf6fe8a69150fcdf3c83fc.png)
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2024-03-03更新
|
279次组卷
|
3卷引用:海南省琼海市嘉积中学2023-2024学年高二下学期高中教学第二次大课堂练习数学试题
解题方法
7 . 已知椭圆
的左、右焦有分别为
,离心率为
为C上任意一点,且
的周长为6,则椭圆方程为_____________ ;若直线
经过定点N,则
的最小值为_____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c70ff8791dd2297e1b7fb1c64c1de38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b42fc33bcfc63ec2f4940ccd3f862400.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22963fe5adffc9757990e0616b6517c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9428a97571b54a842e3746b65e6ad3fb.png)
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解题方法
8 . 已知
为定义在R上的奇函数,当
时,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
___________ ,关于
的不等式
的解集为___________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6e2e79843faf62dde86bf858d1e0569.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5012167982db85f991797dd063e1467.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a71baf6217604517fd98fa97d0f55b43.png)
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解题方法
9 . 在长方体
中,
,以D为原点,
,
,
方向分别为x轴,y轴,z轴正方向建立空间直角坐标系,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30c527864f0dad3bd9f4363d45a6a6e0.png)
______ ,若点P为线段AB的中点,则P到平面
距离为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47abf7a3691e5bb64716c4e50b43a86d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a754ad0537577221e7be168127d7cba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c085dbb9d78aef7d81c3f4d6855f067b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f7373300e952e2b90c7a66b682f5969.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30c527864f0dad3bd9f4363d45a6a6e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9539f8fb13345b449274b67bbda995db.png)
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10 . 函数
是
上周期为5的奇函数,且
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c95abd182a962a2c90cc4b3265b3d0ce.png)
________ .
若函数
的定义域为
,且函数
与
都是偶函数,则
的最小正周期为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3ed15aa3dcc4211fb520b5b942c989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03ac701c08b5398b5b608820ca10ee0e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a00c5df0000b36c11bebffcaebc7ad96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c95abd182a962a2c90cc4b3265b3d0ce.png)
若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3ed15aa3dcc4211fb520b5b942c989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fe17821ea81c6fec60bd5273901bd50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ed2dd8a797d6da9c89e858aed9a7da9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
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