名校
解题方法
1 . 在
中,角A,B,C所对的边分别为a,b,c,
.
(1)求角C;
(2)若
,
,求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ee1129bfa3b6f5432bf342f3b4ac2dd.png)
(1)求角C;
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/019eb94a6a2b38308811470d860e1a20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14df60efbcd2a2aade762e5447e4f4ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次
2020-03-03更新
|
530次组卷
|
2卷引用:四川省达州市2018-2019学年高一下学期期末数学(文)试题
名校
2 . 在
中,角A,B,C所对的边分别为a,b,c,
.
(1)求角B;
(2)若
,求
周长的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4611a770f01940c0fe80dfa5f3fc4740.png)
(1)求角B;
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5742b2684d00be50a66e01c9acb6b51f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次
2020-03-03更新
|
668次组卷
|
3卷引用:四川省达州市2018-2019学年高一下学期期末数学(文)试题
四川省达州市2018-2019学年高一下学期期末数学(文)试题江西省上饶中学2019-2020学年高二上学期期中数学试题(已下线)专题1.3+正弦定理、余弦定理的应用(2)(重点练)-2020-2021学年高二数学十分钟同步课堂专练(苏教版必修5)
3 . (1)已知直线
,求与直线l平行且到直线l距离为2的直线方程;
(2)若关于x的不等式
的解集是
的子集,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b0ae4d688f297055ccb947022bbdcd6.png)
(2)若关于x的不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa81c2bdc9d4dfa3d747fc53e263b1d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ae66c5401deed7341470ca37800463.png)
您最近一年使用:0次
解题方法
4 . 已知数列
的前n项和为
,
,
,
.
(1)求证:数列
是等差数列;
(2)令
,数列
的前n项和为
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9645bd4d2002993b90ec6d48f9c04f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd231d21b6e06beffecff1bf6c18896e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80759fdc78c76b05dab66c325f48a443.png)
(1)求证:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)令
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a27b515f1a285ff1286ac597cce326b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02e80983b88cdf6b540502816c87d13.png)
您最近一年使用:0次
解题方法
5 . 已知向量
,
的夹角为
,若
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59e912b86e064e678ab34210f3fa02ef.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb80eb942aafb194fadc473776f35b1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/433b94c39737727e53468df419d8314a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f785147690f83dcee0a0bc6c327e75a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd18461fd9d77e6fa46a654f0ab540f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/082c6926889f84f438ea35f70bf05f02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59e912b86e064e678ab34210f3fa02ef.png)
您最近一年使用:0次
6 . 已知
、
、
是三个非零向量,命题“若
,则
”的逆命题是________ 命题(填真或假).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d366d8fbb7258ee051f49977441e14a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/778542d99ab19e2ecc0c7ef75161f133.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/693ca4bb515ca182ba6e465e6d584168.png)
您最近一年使用:0次
7 . 已知
,函数
在
上是增函数,实数
的取值范围是________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1407e717820fce7c2eae1e300343f83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed6d804ef44bfc64f824b0ccef71765e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
8 . 设
是函数
的导数,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1248a4101fde73b2cd17ab2506c51176.png)
_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b4d2174f411d9db6ab7b2aea47818cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40fef0cdf69fbfc7b28c307c0e7922d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1248a4101fde73b2cd17ab2506c51176.png)
您最近一年使用:0次
2011·河南郑州·二模
名校
9 . 要得到函数
的图象,只需将函数
的图象沿x轴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54e960ab40ee6533d55c4eb3303bb4c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16e13df8acedad03eb7d6f5f466332cc.png)
A.向左平移![]() | B.向左平移![]() |
C.向右平移![]() | D.向右平移![]() |
您最近一年使用:0次
2016-11-30更新
|
1112次组卷
|
6卷引用:四川省达州市2020-2021学年高一下学期期末数学(文)试题