1 . 已知函数
为二次函数,点
分别为函数
图像上的三点,点
为
图像上的任一点.
(1)求
的最小值;
(2)若
是以
为直径的圆的一条直径,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cb788ae88e457017bb81120b6a2e5ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a42d4d66091ca581dd23b2e9c4f12405.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cb788ae88e457017bb81120b6a2e5ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cb788ae88e457017bb81120b6a2e5ee.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6356488b921e900ad8f0448d20e918e6.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02fd3a87ff523729402741d91ec701f6.png)
您最近一年使用:0次
2022-10-10更新
|
138次组卷
|
2卷引用:河南省名校联考2022-2023学年高三一轮复习诊断考试(一)理科数学试题
名校
2 . 在正方形ABCD中,点E在线段BC上并且
,点F在线段CD上并且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/4/ed5e938d-8653-426b-8dbe-89eb9cc780f1.png?resizew=128)
(1)证明:AE⊥BF
(2)若AE与BF相交于点G,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa12e62b31e4d483e097598aef8bafe6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/591a043cc7a73387f15743c8cb04824c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/4/ed5e938d-8653-426b-8dbe-89eb9cc780f1.png?resizew=128)
(1)证明:AE⊥BF
(2)若AE与BF相交于点G,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f20b700557745476e7b737a2bf3cbcb.png)
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解题方法
3 . 若平面区域的点
满足不等式
(
且
),已知
,
,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/892560dcff6af9f66a3f735652f69dd7.png)
___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82a79a33a83a7ba57a34b5093d1d1d02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffaee391d7943d7c99f78ee9434da350.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a0c4c098615c6bc7e6dcf72e5b5201a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6e2e79843faf62dde86bf858d1e0569.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7509fc7259c2f6f8da804eb0b53ae9a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f12e0e71f33a8be5162ba56c60cc6628.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a9031f0655ffd439458976d98cff0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/892560dcff6af9f66a3f735652f69dd7.png)
您最近一年使用:0次
4 . 已知圆C:
.
(1)当
,
,
时,过点
且斜率为k的直线l与圆C有两个不同的交点,求k的取范围;
(2)当圆C以坐标原点O为圆心,且与直线
相切时,圆与x轴交于A,B两点,圆内的动点P使
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58d7c223faadd624d524399fc0f7f39e.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcdb7a488910743dc5c63afb394b87e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7551011cfb75b26f35b07d6617c6a18b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b25e326fdf9e5456f48e8a99a069f379.png)
(2)当圆C以坐标原点O为圆心,且与直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bb2c3c88ffd31fe98cb36b03566cca8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc495b7c04ff1d3c2bd7098bf96c5649.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59880e470359d8e9faf6ae5ce155cf2a.png)
您最近一年使用:0次
5 . 已知函数
,则函数
的图象的对称轴方程为___________ .设直线
是函数
的图象在
轴右侧第一条对称轴,直线
与
的图象交于点
,设函数
的图象在
轴右侧第一、二个对称中心分别为点
、
,点
是函数
的图象上位于
、
之间的动点,则
的取值范围为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af8bedddc7ff1658ae33d8c2ba6a46ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1359894f6488fa9296e253fdd3e3265c.png)
![](https://img.xkw.com/dksih/QBM/2022/4/29/2968800328146944/2970581238751232/STEM/a7748bf6-17ab-4057-b907-f58e274d34fb.png?resizew=190)
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解题方法
6 . 已知
,
分别是
轴和
轴上的单位向量.若
,则
,
,
,所以![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bfcd094166964fd95978201511716d4.png)
_________ .从而得向量数量积的坐标表示公式:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bd01707e8d32f277b83c007a5b15bd7.png)
_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bf2a896afb91ca06b513acd1a73bb83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/821a7c2e810ef18a2ee78f3722f03c8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82f741158f16b5cd71cc1fa552b317c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef860c880cd1da63a161aa8a576ab5d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73ee1daee178ca3c866bd1b23d343ab8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/324e1eeeae3ebc7c73654f1a78ecba2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bfcd094166964fd95978201511716d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bd01707e8d32f277b83c007a5b15bd7.png)
您最近一年使用:0次