名校
1 . 给出定义:对于函数
,则称向量
为函数
的特征向量,同时称函数
为向量
的特征函数.
(1)设向量
分别为函数
与函数
的特征向量,求
;
(2)设向量
的特征函数为
,且
,
,求
的值;
(3)已知
分别为
三个内角
的对边,
,设函数
的特征向量为
,且
,
分别是边
的中点,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/651055fdc939ef20d1e92e82e6b32f36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33309290491d336f5a69dd4308223cc8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33309290491d336f5a69dd4308223cc8.png)
(1)设向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02bd32ab64d9c9cdf154e86e5eb59c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89deb3ed56b145b87f4711a49b8ab094.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc66d7d60e63dced6a4538c60d09b5c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd1e54da5895696a5505e9322cfede9b.png)
(2)设向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1353a012fe272dffbfac0bd9d9bd7b44.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a813b5adbf5c7082561237894ba6d599.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d78eab267923d207c5518adb9053b069.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b09e347dae4283fa86f65569a576276.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de7d5ef3a3d9a03be91135fc426d57cc.png)
(3)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82f823fe57e96d1a820acadede21940c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aeae90a042dc659a868a8997f1a0736.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e257e6c38a24ced4f9423f7f51b0e92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/622e4b02aae76d54b295df9890c1d2a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dec2ca6438c82b43f746057d8129885.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/295f5a1e09ac16dbedad157b16ca2ba8.png)
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2 . 在
中,角
所对的边分别为
,若
成等差数列,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c5688323a324c9b1d08a9b43355f41f.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce7af7c5df749c6fa9bbe87faa72c66d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bba1e7a657ed134e68efd159b606620f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bba1e7a657ed134e68efd159b606620f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c5688323a324c9b1d08a9b43355f41f.png)
您最近一年使用:0次
名校
解题方法
3 . 在
中,已知
,
,
,点M是边AB的中点,且
,直线CM与BN相交于点P.
(1)求
;
(2)求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d70dc2c20619a4fc12a0cfda59af5b69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1371fe98a65d8ebd840c8d98346b6d15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cf70da2bef86711835648ec4ef8ec5f.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2043525d692d0a9568d848748f1ea09a.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2ca95656f3e52f58c194e3272c928a.png)
您最近一年使用:0次
名校
4 . 在
中,
,点
在线段
上,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/307a282c4f08779b076cf6489f7aa336.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fbb8bceee477e2942e6364929cf2d42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f0b669ef4514f24ee09adeff7f41238.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a0f8721c5bc8241689e7aab535c2909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/307a282c4f08779b076cf6489f7aa336.png)
您最近一年使用:0次
5 . 在△ABC中,
M是BC的中点,
,则AC=( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/275abf9f53352909d4321a08c51e6d36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/251a0e63b401d131f69677ccf5fabacf.png)
A.![]() | B.2 | C.![]() | D.4 |
您最近一年使用:0次
6 . 在
中,已知
,
,角
的平分线
与
交于点
,点
满足
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e2bdbb9c94b83909c497fbd8c5b0b29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/397fca77f42d61ad3ff5388cee5bf80e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ea8abb4cab55296ca7fc63de0af0aae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e6d33d9daf52a55b154fd2aea17753f.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
7 . 已知
的角A,B,C的对边分别为a,b,c,且
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1275a53087eea8820ee57627707ace18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/459459559720ab5e154a80723c47cc30.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
解题方法
8 . 在
中,已知
,则
的内切圆的面积为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0c73712a3867e10e12464590e58b0aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
9 . 如图所示,某海域的东西方向上分别有
两个观测塔,它们相距
海里,现
观测塔发现有一艘轮船在
点发出求救信号,经观测得知
点位于
点北偏东
同时
观测塔也发现了求救信号,经观测
点位于
点北偏西
,这时位于
点南偏西
且与
相距30海里的
点有一救援船,其航行速度为30海里/小时.![](https://staticzujuan.xkw.com/quesimg/Upload/formula/068c71740a27b4aa272eeb13e47b826d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/18/8086f503-38ad-4c51-b2fb-ca57e2d4fe50.png?resizew=139)
(1)求
点到
点的距离
;
(2)若命令
处的救援船立即前往
点营救,求该救援船到达
点大约需要多少分钟.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ae6f48b9a53c0155a692509cf31f7e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3e233fe2b29b0bb1e01409dfe0829fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/270800ba975e87235e8802a631e5f3a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0572a9bd316c92391d73b095df65e4d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/270800ba975e87235e8802a631e5f3a2.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/068c71740a27b4aa272eeb13e47b826d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/18/8086f503-38ad-4c51-b2fb-ca57e2d4fe50.png?resizew=139)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
(2)若命令
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
您最近一年使用:0次
2024-04-15更新
|
687次组卷
|
3卷引用:宁夏银川市唐徕中学2023-2024学年高一下学期4月月考数学试卷
名校
解题方法
10 . 在
中,角
,
,
所对的边分别为
,
,
,若
,
,且点
满足
,则
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6eb82e6dceef1aa5633497abbe5b4b02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ecc4f7ae63e7f73ea4f264b12161713.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d69035a9c0bc4ddc83d0cc12c25a9246.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b4d852fb2e9ded6fafb26ac6ab69b7c.png)
A.16 | B.8 | C.![]() | D.![]() |
您最近一年使用:0次