名校
1 . 如图,某公园有三条观光大道
围成直角三角形,其中直角边
,斜边
.现有甲、乙、丙三位小朋友分别在
大道上嬉戏,
![](https://img.xkw.com/dksih/QBM/2020/4/4/2434429513687040/2435220177477632/STEM/76736e6fb2914d75987f89e989872963.png?resizew=106)
(1)若甲、乙都以每分钟100
的速度从点
出发在各自的大道上奔走,乙比甲迟2分钟出发,当乙出发1分钟后到达
,甲到达
,求此时甲、乙两人之间的距离;
(2)甲、乙、丙所在位置分别记为点
.设
,乙、丙之间的距离是甲、乙之间距离的2倍,且
,请将甲、乙之间的距离
表示为
的函数,并求甲、乙之间的最小距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a0e08a39c6619123557148d195abfbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/595b788eff1137ad4b0dd25e0ed60cca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c521c3c5c3415c0cce42e3cc4c6a79c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a0e08a39c6619123557148d195abfbe.png)
![](https://img.xkw.com/dksih/QBM/2020/4/4/2434429513687040/2435220177477632/STEM/76736e6fb2914d75987f89e989872963.png?resizew=106)
(1)若甲、乙都以每分钟100
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
(2)甲、乙、丙所在位置分别记为点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/927456b0989846a2f1573844bbaa2105.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd3c8e492a54cfe1b2e0782ff8839580.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/317acf1c9405f27abff83dea296c15a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
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2020-04-06更新
|
655次组卷
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13卷引用:重庆市南岸区2019-2020学年高一上学期期末数学试题
重庆市南岸区2019-2020学年高一上学期期末数学试题河北省邯郸市成安县第一中学2017-2018学年高二9月月考数学(理)试题上海市崇明区2018届高三4月模拟考试(二模)数学试题专题17 以三角函数为背景的应用题-《巅峰冲刺2020年高考之二轮专项提升》[江苏]山东省泰安一中、宁阳一中2019-2020学年高三上学期段考(三)数学试题沪教版(2020) 必修第二册 同步跟踪练习 期末测试卷云南省弥勒市第一中学2020-2021学年高一下学期第四次月考数学试题江苏省盐城市滨海县东元中学2020-2021学年高一下学期期中数学试题云南省昆明市外国语学校2020-2021学年高一4月月考数学试题山东省烟台市第二中学2021-2022学年高一下学期4月月考数学试题沪教版(2020) 必修第二册 同步跟踪练习 期末测试卷(已下线)6.4.3 余弦定理、正弦定理 (第3课时)应用举例(分层作业)-【上好课】2022-2023学年高一数学同步备课系列(人教A版2019必修第二册)上海市崇明中学2023届高三下学期第一阶段练习数学试题
名校
2 . 函数
单调递减区间为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d2359ada509cfb71d11dae2bd673466.png)
A.![]() ![]() | B.![]() ![]() |
C.![]() ![]() | D.![]() ![]() |
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3 .
的值是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2071eb91e9a4780e6f1276a107c7a906.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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解题方法
4 . 已知函数
,
(其中
,
,
)的最小正周期为
,且图象上一个最低点为
.
(Ⅰ)求
的解析式;
(Ⅱ)若函数
在
上取得最小值时对应的角度为
,求半径为3,圆心角为
的扇形的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af5e2a383cb47eb87493e86c8c40caf0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13378be06b6b01bcad1d261ff14e87cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4456675a5dbe545462a22cef9aca8fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93778ac16acb542c259b9c4c49b410b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86ebba6ed1add0fe647c0226614b9290.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e56c743c061aa50c9061dad3d92f9bce.png)
(Ⅰ)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(Ⅱ)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fa60bde7d488dd94c92b3ff8f692f6f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
您最近一年使用:0次
名校
解题方法
5 . 已知
,
是方程
的两实根.
(1)求实数
的值;
(2)设函数
,
是函数
的零点,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b01adc561735ff5be9bb97266918f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5201fc26d013f6fb889933c0e32f5c53.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec3a11c5723e7a817ee52e1eb259668c.png)
(1)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af468eb31d03f126100c7775da2d4bcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43660b1543b3a2b46185f7629d28a963.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b805245af88a2c01ddc4e5276bf89896.png)
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解题方法
6 . ![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dbf26cc09501b33c002df6a75898146.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dbf26cc09501b33c002df6a75898146.png)
您最近一年使用:0次
名校
7 . 如图,
,
,
是由直线
引出的三个不重合的半平面,其中二面角
大小为60°,
在二面角
内绕直线
旋转,圆
在
内,且圆
在
,
内的射影分别为椭圆
,
.记椭圆
,
的离心率分别为
,
,则
的取值范围是( )
![](https://img.xkw.com/dksih/QBM/2020/2/9/2395181552033792/2395423923314688/STEM/9bd3f4d5-d902-4b6b-9ca8-2a263f2ff6bb.png?resizew=254)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f435efcc7869eec21bdba1ed81dc3f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/754bbd99327195520a4ca3ce3b9a0577.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f435efcc7869eec21bdba1ed81dc3f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/754bbd99327195520a4ca3ce3b9a0577.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f435efcc7869eec21bdba1ed81dc3f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d33558881906c228c262ff8024dcfc4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a33a99190a8fd29c36d5a002e3197cc5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb70c73df1696ee91cfc72e1a57f6dec.png)
![](https://img.xkw.com/dksih/QBM/2020/2/9/2395181552033792/2395423923314688/STEM/9bd3f4d5-d902-4b6b-9ca8-2a263f2ff6bb.png?resizew=254)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2020-02-09更新
|
974次组卷
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3卷引用:重庆市十一中、七中等七校2019-2020年高二上学期期末数学试题
名校
8 . 定义在
上的函数
满足:
,且当
时,
,则函数
的零点个数是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/102cab9727ea800ef039db5eba383355.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b9aa676fad54f444d64c488445c05c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0bbd9047ed7229ed297e759cb354fb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59d71dffac6c5bb34308297458e8c8bd.png)
A.5 | B.6 | C.7 | D.8 |
您最近一年使用:0次
2020-01-19更新
|
336次组卷
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3卷引用:重庆市南岸区2019-2020学年高一上学期期末数学试题
9 . 已知
,
,
,
,
为
外接圆上的一动点,且
,则
的最大值是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f8f88798ec42a58dccd212586382b23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efc6e4b936d7a800e839a30c3839574d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65a3e478bb87d094e3a0af30dd10ae8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b6a0253914ea66afe46a33a9855c1e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa33e1fb59b317c9592546c096d5f050.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b88584cf1df43e28d03592c7998b1653.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2019-04-28更新
|
2597次组卷
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5卷引用:重庆市南岸区2019-2020学年高一上学期期末数学试题
重庆市南岸区2019-2020学年高一上学期期末数学试题【市级联考】安徽省宣城市2019届高三上学期期末考试理科数学试题(已下线)专题12 三角形的心的千万应用-备战2020年高考数学二轮痛点突破专项归纳与提高(已下线)专题5-2 向量线性运算及四心综合归类- 2(已下线)专题13 平面向量(选填题)-1
名校
10 . 将函数
向右平移
个单位后得到函数
,则
具有性质
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a19d6fa3789aed1a7750709cbcfabae0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af9955b5aebb73cd84447e8541f901ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
A.在![]() |
B.最大值为1,图象关于直线![]() |
C.在![]() |
D.周期为![]() ![]() |
您最近一年使用:0次
2018-12-17更新
|
1031次组卷
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8卷引用:重庆市南岸区2019-2020学年高一上学期期末数学试题