解题方法
1 . 已知函数
(
,对
,且
都有
.满足
的实数
有且只有3个,给出下述四个结论:
①满足题目条件的实数
有且只有1个;
②满足题目条件的实数
有且只有1个;
③
在
上单调递增;
④
的取值范围是
.
其中所有正确结论的编号是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a760d7ed7e59d8038914152ad301f31a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4456675a5dbe545462a22cef9aca8fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dea85b0d7ce9666742056656ae5c5f4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36858a8d6b59bb8b2cb6764ee1a6e723.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/deb73539af255bde55d682b0d0ca735f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba35bd709f9499f46518bcdfa3a73e97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/291c25fc6a69d6d0ccfb8d839b9b4462.png)
①满足题目条件的实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
②满足题目条件的实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3773b88907bc018a0d61a0f6951e9012.png)
④
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/074c228ffc7b1e306f8410afe7bc4b5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78a9afb4f32574a18443cf891ed794f9.png)
其中所有正确结论的编号是( )
A.①④ | B.②③ | C.①②③ | D.①③④ |
您最近一年使用:0次
2022-03-18更新
|
946次组卷
|
2卷引用:云南省三校2022届高三下学期高考备考实用性联考(四)数学(理)试题
名校
解题方法
2 . 在三角形ABC中(A点在BC上方),若
,
,BC边上的高为h,三角形ABC的解的个数为n,则以下错误的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc8c65bea2c80af038768b74250c694e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ffc2817fa590affb5a760a25dc65308.png)
A.当![]() ![]() | B.当![]() ![]() |
C.当![]() ![]() | D.当![]() ![]() |
您最近一年使用:0次
2022-03-18更新
|
866次组卷
|
5卷引用:河南省许昌高级中学2021-2022学年高三下学期开学考试理科数学试题
河南省许昌高级中学2021-2022学年高三下学期开学考试理科数学试题河南省许昌高级中学2021-2022学年高三下学期开学考试文科数学试题(已下线)5.4 正、余弦定理(精练)(提升版) - 1(已下线)专题20 解三角形-2(已下线)第六章 本章综合--汇总本章方法【第三课】“上好三节课,做好三套题“高中数学素养晋级之路
名校
解题方法
3 . 已知
中,
为中线,
,
.
![](https://img.xkw.com/dksih/QBM/2022/2/7/2911129391480832/2938269518266368/STEM/65812e32ec7f444f895f613d22b41179.png?resizew=177)
(1)若
,求边
的长;
(2)当
面积最大时,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bb5b12692517a39c320f99a479eb055.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f06062572ddd10a03a5061ffef91d4c.png)
![](https://img.xkw.com/dksih/QBM/2022/2/7/2911129391480832/2938269518266368/STEM/65812e32ec7f444f895f613d22b41179.png?resizew=177)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7788830ed1cb3b9c5988f70f43595f2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cf2d39a965604b748811d9dff1cfdb8.png)
您最近一年使用:0次
4 . 已知函数
,则下列命题正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18548549b4caf06b6899f6c0e8bf1e9a.png)
A.函数![]() ![]() |
B.函数![]() ![]() |
C.函数![]() ![]() ![]() |
D.若实数m使得方程![]() ![]() ![]() ![]() ![]() ![]() |
您最近一年使用:0次
2022-03-17更新
|
449次组卷
|
4卷引用:重庆市凤鸣山中学2022届高三上学期10月月考数学试题
重庆市凤鸣山中学2022届高三上学期10月月考数学试题(已下线)重难点03 四种三角函数与解三角形数学思想(核心考点讲与练)-2023年高考数学一轮复习核心考点讲与练(新高考专用)黑龙江省杜尔伯特蒙古族自治县第一中学2021-2022学年高一下学期第二次月考数学试题江苏省常州市第二中学2023-2024学年高一下学期3月月考数学试卷
名校
解题方法
5 . 如图, 直线
,点
是
之间的一个定点,过点
的直线
垂直于直线
(
为常数),点
分别为
上的动点,已知
. 设
的面积为
.
,求
的面积;
(2)写出函数
的解析式;
(3)求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1095c036b49c3327baaa2c3c7f746134.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44434b647ec546fe787e2164e0be6cd2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5906277c957674134707aab74800728.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/280860dd039e1305a5ccc455f63e8223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab609a6574633ebabcff3e73fa862081.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44434b647ec546fe787e2164e0be6cd2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7502eee6f33e8c940dec63ab6473c52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e4a2591e8ce64a3aa1c8b496cabe28c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41748aed399abf1a221a1a7eb2455210.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c69a23d106fd34aa17b22e9c9a8de36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(2)写出函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41748aed399abf1a221a1a7eb2455210.png)
(3)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41748aed399abf1a221a1a7eb2455210.png)
您最近一年使用:0次
6 . 当
时,确定方程
的根的个数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebb22954b97b202f64be04066ffc5c8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4fb9c8af4849e7c4a39c7a39f8ba74e.png)
您最近一年使用:0次
7 . 已知函数
,若函数
的图象在区间
上的最高点和最低点共有
个,下列说法正确的是___________ .
①
在
上有且仅有
个零点;
②
在
上有且仅有
个极大值点;
③
的取值范围是
;
④
在
上为单递增函数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/451fb37d5feed2d0c92f5f79cadeb0e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aebb9595cfebe608e2b3ec06c10421dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f8c4c029e552954bd493b49aeab82d5.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aebb9595cfebe608e2b3ec06c10421dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d91e07104b699c4012be2d26160976a2.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aebb9595cfebe608e2b3ec06c10421dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/074c228ffc7b1e306f8410afe7bc4b5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b319148cf16b732d2c3912e9b83b944.png)
④
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90600511a3738615743e3bf11b3fad17.png)
您最近一年使用:0次
2022-03-10更新
|
945次组卷
|
3卷引用:贵州省贵阳市五校(贵阳民中 贵阳九中 贵州省实验中学 贵阳二中 贵阳八中)2022届高三下学期联考(五)数学(文)试题
名校
解题方法
8 . 已知函数
的最小正周期为4,且满足
.
(1)求
的解析式.
(2)是否存在实数
满足
?若存在,请求出
的取值范围;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bbe5d1ff75001b018b1ad8dfde243e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24428839673d8aa2e5ed80b0dbe19b6c.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
(2)是否存在实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c8e10b66208537d99d11a2b8d0905fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88d8247d4a0ce8b76e0f364e82d78d96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
2022-03-09更新
|
873次组卷
|
4卷引用:河南省平顶山市2021-2022学年高一上学期期末数学试题
解题方法
9 . 已知函数
,
,
的图象的3个交点可以构成一个等腰直角三角形,则
的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1121bdb9b01935d5f878209fd150bd0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5eac15eabeaefd981d56c137a3eeea4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4456675a5dbe545462a22cef9aca8fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/074c228ffc7b1e306f8410afe7bc4b5c.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
解题方法
10 . 如图,从气球A上测得正前方的河流的两岸B,C的俯角分别为
、
,其中
,
.如果这时气球的高度
,则河流的宽度BC为( )
![](https://img.xkw.com/dksih/QBM/2022/2/23/2922601363963904/2929565091766272/STEM/aee24a57-5740-42b5-b1f7-24f456bb687c.png?resizew=205)
![](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/97cf714ffb3fd5917a76b191640b55fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20d5a9690d02c2b1e6bbd6fd05225c09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7a98ab626da2f1ed939e2e157e422e2.png)
![](https://img.xkw.com/dksih/QBM/2022/2/23/2922601363963904/2929565091766272/STEM/aee24a57-5740-42b5-b1f7-24f456bb687c.png?resizew=205)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2022-03-05更新
|
207次组卷
|
2卷引用:河南省洛阳市2021-2022学年高二上学期期末考试数学(理)试题