1 . 下列命题正确的是( )
A.![]() |
B.已知![]() ![]() ![]() ![]() ![]() ![]() |
C.已知![]() ![]() ![]() ![]() ![]() |
D.设函数![]() ![]() ![]() ![]() |
您最近一年使用:0次
名校
解题方法
2 . 已知函数
的部分图像如图所示.
![](https://img.xkw.com/dksih/QBM/2022/7/18/3025132439199744/3029567945867264/STEM/c37c2baae13a4c02b91be76622ec48fe.png?resizew=141)
(1)求函数
的解析式;
(2)若
,
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa97014d3fd47bc9eb1870b6595a1a46.png)
![](https://img.xkw.com/dksih/QBM/2022/7/18/3025132439199744/3029567945867264/STEM/c37c2baae13a4c02b91be76622ec48fe.png?resizew=141)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9cd0f76789ad7e4f310ccd984b4009a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71b86b4790c483df0f654898d36033f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6f90c4754e6b6fc862d72943fb35569.png)
您最近一年使用:0次
2022-07-24更新
|
816次组卷
|
2卷引用:陕西省铜川市第一中学2021-2022学年高二下学期期末文科数学试题
3 . 设函数
,
.
(1)求
的值;
(2)从下述问题①、问题②、问题③中选择一个进行解答.
问题①:当
时,求
的值域.问题②:求
的单调递增区间.问题③:若
,且
,试求
的值.
注:作答时首先说明选择哪个问题解答;如果选择多个问题解答,按第一个解答计分.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19e091a92328e54f8997efb819e5cdf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24a57996290794e082b21d8f1dfc322a.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9b87f4ef298bdeebf59a0d850aff72c.png)
(2)从下述问题①、问题②、问题③中选择一个进行解答.
问题①:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb48434bdcafb5e084fc0b6396cb9469.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/7bbcecfcebf4c4493e22bfb978df4c86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8f55b8836b41be612a52ca9caf97006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
注:作答时首先说明选择哪个问题解答;如果选择多个问题解答,按第一个解答计分.
您最近一年使用:0次
名校
解题方法
4 . 在△ABC中,角A,B,C所对的边分别为a,b,c,已知b-c=2,
,b2+c2=52.
(1)求a;
(2)求cos
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/256b633bc67729ae23268fc17117a0f1.png)
(1)求a;
(2)求cos
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d001dd22d475bd25172ff4cda6112eb.png)
您最近一年使用:0次
名校
5 . 已知向量
,
,函数
.
(1)求
在
上的值域;
(2)若
,且
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3972c719380741c984b83c823bcee82f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/772a73a101645f97c8c069065e860d9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dae9f908aabcd9d9c46a0ecdfd1d6c12.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/004f3762d48fc39c436a96aeba7145fc.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78f669a86f3b055618a4807ad4e8d373.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/612fd36aeb83099c4644c076db691612.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e0e0cba55323b38b134547f459e6731.png)
您最近一年使用:0次
2022-01-29更新
|
620次组卷
|
3卷引用:安徽省六安市舒城中学2021-2022学年高二下学期第一次月考数学试题
6 . 若
,则
的值是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/709d1fccf776d23fd5062db019fd272e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92bff061cb1ca10bf9c50037403ae532.png)
您最近一年使用:0次
7 . 已知函数
,在锐角三角形
中,
,且
,则
的值为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/909a5da4eb74d0506781ac9c58622e4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56c337f80d54f4b082dc9f0a667cd82a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6015d54315be017512361779c1769e18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b03005d17bf564371ad29fea41f5c650.png)
A.1 | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
8 . 已知向量
,
与
的夹角为
,
与
的夹角为
.
当
时,求
的值;
当
时,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cf0f9a206215e946b88791b299d1129.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23bd18136e4e71e1e267bc9f8634b932.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ecf646bc2e4cdd46fc5cc40d741dab5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59fe46f47336606882e51409111f40c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec82bd4e0fb7887e5999b8220f60b073.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ecf646bc2e4cdd46fc5cc40d741dab5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/266b82be5c64ff2468ad1905a4b69fd4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4141b26d2c32655003494a91ad6331b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96f5b0d88ef62e78e154a483689dda35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42e024d06aedf89a61ef21db86501e8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65863c1abad833b79c303bfca24f535c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a15c99fc989bee99c1c6e6d035b7b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/803cd3da58bf4c76f88c15ff66169ae9.png)
您最近一年使用:0次
2019-01-21更新
|
356次组卷
|
2卷引用:安徽省合肥市肥东县第二中学2020-2021学年高二下学期期中文科数学试题
9 . (1)求证:
;
(2)某同学在一次研究性学习中发现,以下五个式子的值都等于同一个常数:
;
;
;
;
.
①试从上述五个式子中选择一个,求出这个常数;
②根据①的计算结果,将该同学的发现推广为三角恒等式.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db3c473f62cfb7383001dc520e848785.png)
(2)某同学在一次研究性学习中发现,以下五个式子的值都等于同一个常数:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/025397adc7006202360fd3965e47a3dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/637c6e43ede77c819bf0009f9c8a57c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb5cf5f1a091b990bdd68226f5f89538.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f20e3ee48f12c85cf667db510d52e09b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a37af6aa780fa698382ec3fde4864fa0.png)
①试从上述五个式子中选择一个,求出这个常数;
②根据①的计算结果,将该同学的发现推广为三角恒等式.
您最近一年使用:0次
2017-07-25更新
|
418次组卷
|
3卷引用:陕西省宝鸡市金台区2016-2017学年高二下学期期中考试数学理试题
名校
解题方法
10 . 求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6629c2f8475f1e8da8919b417c969541.png)
您最近一年使用:0次