名校
解题方法
1 . 已知单位向量
,
,若
,则
与
的夹角余弦的值为_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ff409cd3886c767afb13c9a869c5f23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6570cd7c2f81c9fcffd2c64664f1564.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1705d3b47851f01f1275ff36b973847e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ff409cd3886c767afb13c9a869c5f23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6570cd7c2f81c9fcffd2c64664f1564.png)
您最近一年使用:0次
2021-10-15更新
|
796次组卷
|
3卷引用:2021年浙江省普通高中学业水平模拟考试数学试题
2 . 已知圆C的方程为
,点E的坐标为
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2d9771f42ca068e7f0788797f4ecf4a.png)
_____________ ;直线l:
,则C到直线l的距离为_____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ecfe932bf546c53654f7ec2cc80019c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fab8a0cc6504aa4c3a38006f5394b4c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2d9771f42ca068e7f0788797f4ecf4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa6342e0a5a8942cfb1cf535ceb2c50d.png)
您最近一年使用:0次
2021-09-15更新
|
256次组卷
|
3卷引用:2021年浙江省普通高中学业水平模拟考试数学试题
名校
3 .
=______________ .(化简到用tan表示)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0a8354df280c7e47a1dba1481d78c6f.png)
您最近一年使用:0次
2021-09-15更新
|
1083次组卷
|
3卷引用:2021年浙江省普通高中学业水平模拟考试数学试题
解题方法
4 . 已知圆锥展开图的侧面积为
,且为半圆,则底面半径为_______________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60c5a9c96937c795d4d15cac6e356904.png)
您最近一年使用:0次
2021-09-15更新
|
864次组卷
|
3卷引用:2021年浙江省普通高中学业水平模拟考试数学试题
2021年浙江省普通高中学业水平模拟考试数学试题浙江省金华市浙江师大附属东阳花园外国语学校2020-2021学年高二下学期第一次质量检测数学试题(已下线)2021年全国高考乙卷数学(理)试题变式题11-15题
5 . 已知整数数列
的前
项和为
,且
,
.若对任意给定的
,存在正整数
,使得
对任意正整数
成立,则
的取值集合是________ .
![](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/0a97aa79f9746d819f37958c3f240965.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af5cf9c12181dd8683944b2b30bf8e08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d7e9f86738335a22298559db41037a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8363e5a1921bbce5c0fa0a286eba090.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c1ccc6c74b8754e9bcbb3f39a11b6f1.png)
您最近一年使用:0次
6 . 已知函数
则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92682840e2a230de346562b2032f8adb.png)
________ ,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8053cc02b6ef5842abf1d4201e8866f.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa9f99f5015df805bd0d1d940e9fc5bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92682840e2a230de346562b2032f8adb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8053cc02b6ef5842abf1d4201e8866f.png)
您最近一年使用:0次
7 . 刘徽是我国古代著名数学家,他对《九章算术》中的各个图形面积计算公式的正确性进行验证,树立了中国数学史上对数学命题进行逻辑证明的典范.刘徽认为圆可以看成一簇半径连续增大的同心圆叠合而成,那么这些同心圆的周长也可以叠成一个等腰三角形(如图1),该圆的面积与等腰三角形的面积相等.即
.运用这种积线成面的面积观,圆环面积也和一个等腰梯形的面积相等.若某圆环的内圆周长为
,外圆周长为
,半径差为d(如图2),则该圆环的面积![](https://staticzujuan.xkw.com/quesimg/Upload/formula/447a9718a502491b47072ce013c26a2f.png)
________ (用
,
,d表示).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9cc27c63f30e77a55208d09ccdbbb5d.png)
![](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/447a9718a502491b47072ce013c26a2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://img.xkw.com/dksih/QBM/2021/7/30/2775558085312512/2793123646357504/STEM/01d832ea-b759-4173-b8bf-45a441e04ffa.png?resizew=428)
您最近一年使用:0次
解题方法
8 . 若函数
的最大值是1,则实数a的值是________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bcf1bf3474339b6b78585341f929d0c.png)
您最近一年使用:0次
2021-08-24更新
|
654次组卷
|
2卷引用:2021年7月浙江省普通高中学业水平考试数学试题
9 . 已知平面向量
满足
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d6d343208f0f5e3aab71004c245dabe.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8ccba3b87a8a48ac3dd5f72d00bdb1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae0ae22158987dea4583c4a12c7b0998.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d6d343208f0f5e3aab71004c245dabe.png)
您最近一年使用:0次
2021-01-14更新
|
2040次组卷
|
6卷引用:2021年1月浙江省普通高中学业水平考试数学试题
10 . 设等比数列
的公比为
,前
项和为
.若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad0d99fef1aa4dbcc6dc7b30b7d2c9a9.png)
____ ,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef354e5c5ff828cc8d27c71badd40f98.png)
____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.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/8306c80c1e35b0c01e40de71f4fe9b08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad0d99fef1aa4dbcc6dc7b30b7d2c9a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef354e5c5ff828cc8d27c71badd40f98.png)
您最近一年使用:0次