1 . 简谐运动可以用函数
,
表示,其中
,
.则初相为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5560425727c95ea2e57e657fad919d5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac4cbc7b067862a3d9c6789b392fc068.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13378be06b6b01bcad1d261ff14e87cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4456675a5dbe545462a22cef9aca8fe.png)
您最近一年使用:0次
2 . ![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b729f3bcad3527fd911eb71de25a64f9.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b729f3bcad3527fd911eb71de25a64f9.png)
您最近一年使用:0次
3 . 一般地,函数
(其中
)的最小正周期是________ ,把
图象上所有点的横坐标缩短(当
时)或伸长(当
时)到原来的________ 倍(纵坐标不变),就得到
的图象.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ae26042cc00e3d363ac747ecd087f63.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4456675a5dbe545462a22cef9aca8fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00288a55aeecf48d33cdc1277307c90d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/219e526faaa7fb02d01ec55b947a9dfb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb8b79682b1872ca13d4d119adc01613.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ae26042cc00e3d363ac747ecd087f63.png)
您最近一年使用:0次
4 . ![](https://staticzujuan.xkw.com/quesimg/Upload/formula/994d6e7f47b3b98aa848c05d0af8f65e.png)
________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/994d6e7f47b3b98aa848c05d0af8f65e.png)
您最近一年使用:0次
5 . 一般地,函数
的单调性与导函数
的正负之间具有如下的关系:在某个区间
上,如果_________ ,那么函数
在区间
上单调递增;在某个区间
上,如果_________ ,那么函数
在区间
上单调递减.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/724340d69477c0ec2418c392b22b1cab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4562f3225c98cf5cb11b47d98c9cc9c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4562f3225c98cf5cb11b47d98c9cc9c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4562f3225c98cf5cb11b47d98c9cc9c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4562f3225c98cf5cb11b47d98c9cc9c3.png)
您最近一年使用:0次
6 . 函数
在
处的导数
就是函数
的图象在点
处的切线的_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11abb76da45ffa52b47c3a6b9a03ac7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91421e7703d87617f50270178decd18a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25be20e3724274132cb83b16deaeecfc.png)
您最近一年使用:0次
7 . 如果两个平面垂直,那么____________________ 垂直于它们交线的直线与另一个平面垂直.
您最近一年使用:0次
23-24高二下·全国·课前预习
8 . 等差数列的前
项和公式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
已知量 | 首项、末项与项数 | 首项、公差与项数 |
求和公式 | ![]() | ![]() |
您最近一年使用:0次
23-24高一下·全国·课前预习
9 . 已知向量
,
,
和实数λ,则:
(1)交换律:___________ ;
(2)数乘结合律:_______________ ;
(3)分配律:________________ .
注意:(1)向量的数量积不满足消去律;若
,
,
均为非零向量,且
,但得不到
.
(2)
,因为
,
是数量积,是实数,不是向量,所以
与向量
共线,
与向量
共线,因此,
在一般情况下不成立.
(3)推论:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45ba716f03748c19b7ce2f99af536ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73a0b19e69be46452425916a0fcb49c9.png)
(1)交换律:
(2)数乘结合律:
(3)分配律:
注意:(1)向量的数量积不满足消去律;若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45ba716f03748c19b7ce2f99af536ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73a0b19e69be46452425916a0fcb49c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9dcf295c00ce5def2c8ac6ce4c937e5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4b7ca4667865ebe617fa6539e8d11fd.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8933b777306573e1f2c4d3dda8f5227d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/854e16eb319ee454088f5b527cf6c4d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c15cd63a9494b3947c9ee121913d9f51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0795f64078d89a9f5cb3680bce2816b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73a0b19e69be46452425916a0fcb49c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380247c556e5174db9ea7e22ccd074b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b1c174ed96f1dd5043691210f155b5d.png)
(3)推论:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c340671538a445c23040ef2e1a802930.png)
您最近一年使用:0次
23-24高一下·全国·课前预习
10 . 已知
,
,则:
(1)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9e252f76824e2515fa7b951845da789.png)
__________ ,
__________ ,
即两个向量和(差)的坐标分别等于这两个向量相应坐标的和(差).
(2)若点A坐标为
,点B坐标为
,O为坐标原点,
则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75f051cabd248937ab69fce64a390920.png)
______ ,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d5b06f57b825616050a9b897fb1a50b.png)
________ ,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ee2c8f08a2112767ba279bb135262f5.png)
_________ ,即一个向量的坐标等于表示此向量的有向线段的终点的坐标减去起点的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2c857eec21dd64ccf0ba530883bb6cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bcab0226effeccd2a336c23079bc1be.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9e252f76824e2515fa7b951845da789.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65de7c2f24ccd9a5a9b6c5920e981309.png)
即两个向量和(差)的坐标分别等于这两个向量相应坐标的和(差).
(2)若点A坐标为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56720e2f2b0ddd72156da495923698da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2852ae85cfcc804b3192ea8543c88938.png)
则
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75f051cabd248937ab69fce64a390920.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d5b06f57b825616050a9b897fb1a50b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ee2c8f08a2112767ba279bb135262f5.png)
您最近一年使用:0次