解题方法
1 . (1)画图象:已知函数
.请用“五点法”列表,并在下图中作出函数
在
上的简图
(2)求下列未知向量
;
(3)化简下列式子
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87615b311935bf759dba4c99be05b135.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b604c6522119e77c1cb16b91532a2c1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/27/8cc6633a-b0df-48f1-b73d-4a50d9a6df4b.png?resizew=375)
(2)求下列未知向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fb6b59e0ca41a2232d39662b4741a8f.png)
(3)化简下列式子
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11947b50c20ea84df99bcbc2a67f9d29.png)
您最近一年使用:0次
2 . (1)构造一个图形并解释这个公式
(
、
均为非零向量)的几何意义;
(2)
中
为
中点,证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ecf284a1137d386148de0de8c22cdf4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45ba716f03748c19b7ce2f99af536ab.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/887c1ebf3a0502ffa2abe1f9252dcd54.png)
您最近一年使用:0次
3 . 富比尼原理,又称为算两次思想,即对待同一个量,从不同的角度去考虑,以此建立等量关系或不等关系,从而达到解决问题的目的.如图所示,正九边形ABCDEFGHI中,
,J为边AB的中点.
![](https://img.xkw.com/dksih/QBM/2022/4/19/2961706782253056/2964248449662976/STEM/5ed3704d08c44ef9a935e8b49f2b80e9.png?resizew=205)
(1)求正九边形每个内角的弧度数;
(2)求
;
(3)请结合(2)中
的值,运用富比尼原理,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://img.xkw.com/dksih/QBM/2022/4/19/2961706782253056/2964248449662976/STEM/5ed3704d08c44ef9a935e8b49f2b80e9.png?resizew=205)
(1)求正九边形每个内角的弧度数;
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/965c342097fe12e0fdc26a477c797608.png)
(3)请结合(2)中
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad28b5f1101403620ddbdbe536a620ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d6c7ea350918b5a64d5237a80ade881.png)
您最近一年使用:0次
名校
解题方法
4 . 如图,在△AOB中,已知|
|= 2,|
| = 2
,∠AOB = 90°,单位圆O与OA交于C,
= λ
,λ
(0,1),P为单位圆O上的动点.
+
=
,求λ的值;
(2)记|
|的最小值为f(λ),求f(λ)的表达式及f(λ)的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d60dcb171bb7fd972aab8294d63acdb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f68628a408537b1cf3bf1ca2a69731b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bd98a891fa65f2fc6688001b03185d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9795e7f5cb9b366776c41d8f3f43942.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6709005381938ae7f06aeb3df0a4e9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d20ec3efaa6b6ff5769e8999df5714a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cec64476aaca08de0808afda3618109c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0762365cf0afd8d6966d7d3407e2ade0.png)
(2)记|
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7ae40c0f4bbc712cb3be8479243a434.png)
您最近一年使用:0次
2021-07-15更新
|
460次组卷
|
4卷引用:辽宁省沈阳市东北育才学校2022-2023学年高一上学期期中数学试题