名校
解题方法
1 . (1)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a48c647ad5efb0e0469eb24e994bda0.png)
______ .
(2)若
,且
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8d6ab606fb600ac1ce35f38de14a1a6.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a48c647ad5efb0e0469eb24e994bda0.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a57fd7d45d159443d6eef5b368d64216.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86d763b6c57d61d71b85878027d3eacf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08a6aba7ca7e3483192544c43acd7957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8d6ab606fb600ac1ce35f38de14a1a6.png)
您最近一年使用:0次
名校
解题方法
2 . 谢尔宾斯基三角形由波兰数学家谢尔宾斯基在1915年提出的一种分形,它是按照如下规则得到的:在等边三角形
中,连接三边的中点,得到四个小三角形,然后去掉中间的那个小三角形,最后对余下的三个小三角形重复上述操作,便可获得谢尔宾斯基三角形.记操作
次后,该三角中白色三角形的个数为
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42e4487468ab2823d6dbf7f0ebd2eb38.png)
_______ ,若黑色三角形个数为
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/414187fca31df508dbf88d7f2bb83662.png)
_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42e4487468ab2823d6dbf7f0ebd2eb38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/686ece75006ad358f23314dc8a246e11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/414187fca31df508dbf88d7f2bb83662.png)
您最近一年使用:0次
3 . 我们称
元有序实数组
为
维向量,
为该向量的范数.已知
维向量
,其中
,记范数为奇数的
的个数为
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10d7b114ee11a51d3ddce0dda6a961c3.png)
__________ ;![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17174b614ddfa6ab3890c96cf5562499.png)
__________ (用含
的式子表示,
).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f1d8cb672db61735be7cbcd3d50bf9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60a79b7ec77425af9152ef0cd3dacfe9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45981f9cd45bf7b0655d3c9e461fff5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1e894b2a2d6b062551e7d16fce65940.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a4c2de3e131c6be2f5c9a69a0ec6dae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3cfeacc29e6a61c5b3b4e439c0a91df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10d7b114ee11a51d3ddce0dda6a961c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17174b614ddfa6ab3890c96cf5562499.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e97769855336d73371930df1f187875e.png)
您最近一年使用:0次
2023-12-22更新
|
962次组卷
|
5卷引用:黑龙江省双鸭山市第一中学2023-2024学年高二下学期开学考试数学试题
黑龙江省双鸭山市第一中学2023-2024学年高二下学期开学考试数学试题辽宁省沈阳市第一二〇中学2024届高三上学期第五次质量监测数学试题(已下线)第六章 计数原理(压轴题专练)-2023-2024学年高二数学单元速记·巧练(人教A版2019选择性必修第三册)(已下线)专题01 两个计数原理与排列组合(7类压轴题型)-【常考压轴题】2023-2024学年高二数学压轴题攻略(人教A版2019选择性必修第三册)(已下线)压轴题平面向量与解三角形新定义题(九省联考第19题模式)练
解题方法
4 . 已知抛物线
上有
,A,B三点,且直线
过抛物线的焦点F,抛物线的准线
与
轴交于点C,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88bee8e70f1fab639be1636c7bce0477.png)
________ ,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db727582108fe070cf4596c016728900.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fc58c62444bf42a25289c45425a00f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/416950509ce0852e9c7bbb09104776f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.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/0371da5daf81552929572df04bdc2228.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88bee8e70f1fab639be1636c7bce0477.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db727582108fe070cf4596c016728900.png)
您最近一年使用:0次
名校
解题方法
5 . 已知△ABC的三个角A,B,C所对的边为a,b,c,若∠BAC=
,D为边BC上一点,且AD=1, BD:DC=2c:b,,则tan
=___________ 则b+2c的最小值为 ___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac1a63ab608517bb10aa036783dfb51f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2947ca8e0cdbeb4aab80ce9e7b63ba98.png)
您最近一年使用:0次
2023-04-19更新
|
190次组卷
|
2卷引用:黑龙江省大庆外国语学校2023-2024学年高二上学期开学质量检测数学试题
名校
解题方法
6 . 不等式
的解集为 _____ ,不等式
的解集为 _____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38dee07560b8bf99deedbbbd3a137cdb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10758ef21768fcc284a113a629d003de.png)
您最近一年使用:0次
2023-08-06更新
|
1020次组卷
|
2卷引用:黑龙江省大庆市大庆中学2023-2024学年高一上学期开学考试数学试题
7 . 函数
的振幅是________ ,初相是________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0d755628409f67b034b75a0a4555337.png)
您最近一年使用:0次
名校
8 . 若集合
其中
为实数.
(1)若
是
的充要条件,则
=______ ;
(2)若
是
的充分不必要条件,则
的取值范围可以选择下列哪些序号______ .①
②
③
④
⑤
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7cf70c5a8454a1d5a202434fb367cb4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(1)若
![](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/2c94bb12cee76221e13f9ef955b0aab1.png)
(2)若
![](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/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/879234adbae93aa72b7e101b3738d4e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51ef7bea32c1bda133469b58b2fcbfc0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/870ebc2f7aabb028024894568d749934.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d11ea1c8c1a7e550f1a2b85bd98a8e5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb2852c41419c078554e584d2fc2577f.png)
您最近一年使用:0次
2022-12-18更新
|
180次组卷
|
3卷引用:黑龙江省齐齐哈尔三立高中2022-2023学年高二下学期期初考试数学试题
黑龙江省齐齐哈尔三立高中2022-2023学年高二下学期期初考试数学试题黑龙江哈尔滨市第一二二中学校2021-2022学年高二下学期期末数学试题(已下线)模块四 专题3 题型突破篇 小题满分挑战练(1)
名校
解题方法
9 . 若数列
满足
,则称数列
为牛顿数列.如果
,数列
为牛顿数列,设
,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15dad5a12f34bed0da0de93beae0eaa4.png)
__________ ;数列
的前
项和为
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b2778e2dadff4d91102e6046bb5def8.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e976c0663fa749ca749f99842d21ca03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33610d2a46105e3c8456257221d3d07b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e976c0663fa749ca749f99842d21ca03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16732e791fdfc3e956d7cfad8c43e26d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e976c0663fa749ca749f99842d21ca03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3a0034362ed50f1f7ebe31b688388ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15dad5a12f34bed0da0de93beae0eaa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b2778e2dadff4d91102e6046bb5def8.png)
您最近一年使用:0次
2022-11-22更新
|
404次组卷
|
5卷引用:黑龙江省佳木斯市第八中学2023届高三下学期开学考试数学试题
黑龙江省佳木斯市第八中学2023届高三下学期开学考试数学试题山东省滨州市邹平市第一中学2022-2023学年高三上学期期中考试数学试题山东省淄博市张店区2022-2023学年高三上学期期中数学试题山东省济南市2022-2023学年高三上学期期中数学试题(已下线)山东省济南市2022-2023学年高三上学期期中数学试题变式题15-18
10 . 如图所示,已知在长方体
中,
,则
和
所成角的大小是___________ ,
和BG所成角的大小是___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9a0c3a4e61b97fa9bc58f3179fc2958.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/815caebd34d92c29b70ff5508208bd45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31e55e398e8520d8a36fb5a625a085b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/9/58f04908-b593-4ae6-8a2a-21c1d58eec5f.png?resizew=223)
您最近一年使用:0次