解题方法
1 . 设
,且对任意
,均有
,D为线段AB上一点,连接OD并延长到P,使
,若
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d29c4951df49718dee4cdf5f4056a23a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bf039c46a25e331446c6ee1e9af3c82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12157e1cbf0a0590506d20360ee40f46.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9e2f03c1b599afaf823ec8f0ad09541.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aaf6fc452b4f21a4e7e3707d1d45f41.png)
A.![]() | B.![]() | C.![]() | D.这样的D点有2个 |
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解题方法
2 . 若
,
,下列正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5aa8114ccc325f78b0cec1628e42571c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12eef0a2c2cf0d4dd738b5ea2074f549.png)
A.![]() | B.![]() |
C.![]() ![]() ![]() ![]() | D.![]() |
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解题方法
3 . 在平面直角坐标系中,O为坐标原点,
,互不相同的点
满足
,记
,且
,若点
均在同一函数图像上,则下列满足条件的可能是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/839b0633ca1fb7245db4c1a0e3241ed1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8577d32cc9c5aebf24265025bad1614.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb53cb6df60cc9211f439f60a9cdf5b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e765486bc742b3433f581e58504e331.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a4d503af3cf358ad272c08429258c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7f2c72ab559a0615db4c51327b78d4.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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解题方法
4 . 2022年冬奥会在北京市和张家口市举行,北京也成为世界第一个“双奥”之城,北京冬奥会向世界展现了阳光、自信、开放、充满希望的中国形象,为世人留下许多精彩瞬间,其中“冰墩墩”给人留下了深刻印象,它的左手手心的爱心形状向世界表达了友好交流的寓意.如图,心形曲线可以表示为
,A为曲线上一点,记OA与x非负半轴所成的角为
,则当
时,
可以是( )
![](https://img.xkw.com/dksih/QBM/2022/5/27/2988587756716032/2989920376725504/STEM/6a8a9d39-decf-4743-b87e-43259fb3570c.png?resizew=222)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a76e73fc44b8fcc3ffb9bc269ae7bcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02ce6b576c4d6c9626585e5398e8496.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ae202b3ffa328b1f4475872bd4740f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://img.xkw.com/dksih/QBM/2022/5/27/2988587756716032/2989920376725504/STEM/6a8a9d39-decf-4743-b87e-43259fb3570c.png?resizew=222)
A.![]() | B.![]() | C.![]() | D.![]() |
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解题方法
5 . 在
中,设
,P为
内任意动点记
取最小值时的点P为
.过
作直线交线段CA于M.交线段CB于N,试求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7b914ac924970c75c3b21db75acc593.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/304010e1253e0fc6f7578c210be321f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf9f50605db5d5f8f3a01ee8e474a112.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf9f50605db5d5f8f3a01ee8e474a112.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ab9638460f5fbd5391ba2a3bb51dd35.png)
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解题方法
6 . 下列命题正确的是( )
A.若![]() ![]() |
B.若![]() ![]() |
C.若![]() ![]() ![]() |
D.若点P为![]() ![]() ![]() ![]() |
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2022-05-28更新
|
895次组卷
|
3卷引用:山东省潍坊市2021-2022学年高一下学期5月优秀生测试数学试题
7 . 已知函数
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4836a8a11dbe60408b158fd1fca7c39a.png)
A.若![]() ![]() ![]() ![]() ![]() ![]() |
B.若![]() ![]() ![]() ![]() ![]() |
C.若![]() ![]() ![]() ![]() ![]() ![]() |
D.若![]() ![]() ![]() ![]() ![]() ![]() ![]() |
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8 . 如下图所示,某公司计划建造一座滨海公园,直线
与
均为海岸沿线,
是以
为直角的直角三角形,线段
为“滨海栈桥”,线段
将建成“阳光沙滩沿线”,线段
将建成“灯塔沿线”.现要求“滨海栈桥”长度维持在
不变的基础上,可适当调整“阳光沙滩沿线”与“灯塔沿线”的设计长度
.预计建成后,每
“阳光沙滩沿线”可让公司日均盈利
万元,每
“灯塔沿线”可让公司日均盈利
万元,为使公司日均盈利最大,则应将“灯塔沿线”设计为_________
.
![](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/866b81a8384cce4f24867baca2e6820c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b97285f9b02878e22a071e97fdb3f8a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/783a33f7abced858361ee222f26d2543.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e3f410ce8d064f830e6b7a1ce9e3832.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1890f0b4e81634bb7e013412698640f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1890f0b4e81634bb7e013412698640f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5fe30c67ac20cd4e8b9cc2d0d420a7b.png)
您最近一年使用:0次
解题方法
9 . 已知平行四边形
中,
,
,AE和BF交于点P.
![](https://img.xkw.com/dksih/QBM/2022/5/25/2987010527412224/2988279555710976/STEM/9badeac5-c79e-441a-aa96-5b4da5d385a9.png?resizew=196)
(1)试用
,
表示向量
.
(2)若
的面积为
,
的面积为
,求
的值.
(3)若
,
,求
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d70b9197520d3da41e2e01480f580e89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/048f7048ab21fd6a752f3f64d9a4db30.png)
![](https://img.xkw.com/dksih/QBM/2022/5/25/2987010527412224/2988279555710976/STEM/9badeac5-c79e-441a-aa96-5b4da5d385a9.png?resizew=196)
(1)试用
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1fe2d802f2b37e7db198c5a3c1df9a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/228f4ddbb8959f904d71259be7c6ab36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1395fa3420959a18d91b324adc622116.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad3cd61d00f89e68ccca2cac5c937783.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ceff3844281849df3e37a2e56e110549.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0bd63f55069a3bc870915010b39225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/235f0a6fb218d28383e6f27f2df1f50f.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034d174a0dfdfb1d66f1b62b6eef445c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/923e40c9e7682a0c2d0006b6398c1e5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bac5b9c067002bc06fb400d6c4f3512.png)
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10 . 若
且
,则可以记
;若
且
,则可以记
.实数
,且
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c4cb006b7daecb17ac4973f827b85b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b02b79e4546cb8ace8300116f3bce7c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8222f6d4f2bc82054606f0d05f20ca5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/281c0a16f5712939a0c60e755a711066.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4f2a42c9ad8227eec0904b27e2240c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86a461bf4e6ff8bc12fc81f0e89ee36c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f008e9e83a01060c8c746796094336d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5356108a10c159f8baf03dca2157f7eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad319ecfd5176485f778566f04fdf573.png)
( )
A.![]() | B.![]() | C.![]() | D.![]() |
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