1 . 如图,在
中,角
的对边分别为
,
.
![](https://img.xkw.com/dksih/QBM/2016/12/2/1573196334628864/1573196340895744/STEM/f4c7d88f32a2435abc90ead707089da4.png)
(Ⅰ)求
;
(Ⅱ)若
,
为
外一点,
,
,求四边形
面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd936a2405709574af0a73543d94ad9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46d26218073e4dacf04d755b512f1961.png)
![](https://img.xkw.com/dksih/QBM/2016/12/2/1573196334628864/1573196340895744/STEM/f4c7d88f32a2435abc90ead707089da4.png)
(Ⅰ)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd936a2405709574af0a73543d94ad9c.png)
(Ⅱ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ea678fe7c6a4eb670ffa58c53107ea4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd936a2405709574af0a73543d94ad9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b3bd7fcc7124307e9c33f98c53f2edf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd936a2405709574af0a73543d94ad9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd936a2405709574af0a73543d94ad9c.png)
您最近一年使用:0次
名校
2 . 命题“
”的否定是___ .
![](https://img.xkw.com/dksih/QBM/2016/12/2/1573196334628864/1573196340494336/STEM/4e6d2b8ef35a4453a9ea68ed744fd4a9.png?resizew=125)
您最近一年使用:0次
2016-12-05更新
|
462次组卷
|
3卷引用:2017届江苏南通中学高三上期中数学(理)试卷
解题方法
3 . 已知
为数列
的前
项和,
,
,若关于正整数
的不等式
的解集中的整数解有两个,则正实数
的取值范围为___ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de4a936dd55e9523baac578a3d92ac61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dab6408340ea1b9e5a6ef4548bc941d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
您最近一年使用:0次
2016-12-05更新
|
573次组卷
|
2卷引用:2017届江苏南通中学高三上期中数学(理)试卷
4 . 设
为锐角,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c39940f54be703dc699add942c13a1f.png)
____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ee87bf384709db3517f372ad2738051.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c39940f54be703dc699add942c13a1f.png)
您最近一年使用:0次
2016-12-05更新
|
558次组卷
|
4卷引用:2017届江苏启东中学高三上期第一次月考理数试卷
名校
解题方法
5 . 如图,在直角梯形ABCD中,AB∥CD,∠ADC=90°,AB=3,AD=
,E为BC中点,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6f268b01cb4eb37f350012af63e572e.png)
___ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/985ea6843f52e2edff7d4ef61d822a4b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6f268b01cb4eb37f350012af63e572e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/30/1138983a-2207-4537-bf2a-77788af9b33b.png?resizew=172)
您最近一年使用:0次
2016-12-05更新
|
410次组卷
|
4卷引用:2017届江苏启东中学高三上期第一次月考理数试卷
名校
6 . 已知函数
有两个零点,则
的取值范围_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ee7f59210dd8f06ac98fc10ed7d247f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
您最近一年使用:0次
2016-12-05更新
|
507次组卷
|
2卷引用:2017届江苏启东中学高三上期第一次月考理数试卷
7 . 在
中,角A,B,C的对边分别为a,b,c,
.
(1)若
,求c的最小值;
(2)设向量
,
,且
∥
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c1181ebf1326da66f937c98af565344.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa463356405469c4f63fbbcf45acf45f.png)
(2)设向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff6516f869b6517384fa928124e19ae9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8b4e6c6d6f0adc0ca7700ea0fd00b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/552355ddba8eef1ca3bf15eb53d79622.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdd98836819f79b76830bf1491df66ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6d6ab21dac17bec85a870ae9c99884c.png)
您最近一年使用:0次
8 . 将函数
的图象向左平移
个单位,再向上平移1个单位,所得图象的函数解析式为____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29386015d21ecf04342563f6bd0b10c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af9955b5aebb73cd84447e8541f901ac.png)
您最近一年使用:0次
9 . 若曲线
与曲线
在它们的公共点
处具有公共切线,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a5c145e588834d756ea8a81504abce4.png)
_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31cd0ce93b5e667e626905ea50de73e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02ccad0ef56105b86cf4ee6fe36ab574.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f56635924584077092ac3c7dd68837b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a5c145e588834d756ea8a81504abce4.png)
您最近一年使用:0次
10 . 已知
中,角
的对边分别为
,且
,则
的值是___ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f232f958a74983089aec9f90f735d69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8e5d4f93699f8dcffb0e7840ca5597e.png)
您最近一年使用:0次
2016-12-05更新
|
876次组卷
|
6卷引用:2017届江苏启东中学高三上期第一次月考理数试卷