1 . 在
中,内角
所对的边分别是
,“
”是“
”的
![](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/ca51be437b1a97ca92aa1159ab71102c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19dc38d888741a1b2e95fe0773a48c38.png)
A.充分而不必要条件 | B.必要而不充分条件 |
C.充分必要条件 | D.既不充分又不必要条件 |
您最近一年使用:0次
2017-03-16更新
|
896次组卷
|
6卷引用:甘肃省酒泉市瓜州县2017-2018学年高二上学期期末数学(理)试题
名校
解题方法
2 . 下列判断正确的个数是( )
①“若
,则
”的逆否命题为“若
,则
”;
②“
,
”的否定是“
,
”;
③函数
的最小值为2;
④
三内角成等差数列的充要条件是
.
①“若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3898b62d3fbcb61afb6bc1e9b910f564.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99c6875d552e9fff3c7d655f3a59b166.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31be670d32e753012125c503f2f3be56.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ca3f71ef36362c0796365275a86eb0c.png)
②“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c780149aef1bd77162e85f7f8906a6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd77856f5ff9f90524663bb610df6d5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0c7a319f1fb9ef4cd6bd9eb5ab0c53b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b89f63dc9d7cbd7837c94d604ee5955.png)
③函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/747541183dc10e3c5acf3d15dae2d0cb.png)
④
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32436704a722d5e568ff5c175bf3c662.png)
A.1 | B.2 | C.3 | D.4 |
您最近一年使用:0次
2020-04-08更新
|
165次组卷
|
2卷引用:甘肃省张掖市第二中学2019-2020学年高二4月线上测试数学(文)试题