1 . 下列命题是真命题的序号是
______.①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d43b4c79f79428f2d1ae908f7039017.png)
,则
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10a7e4dcebd24c843379926de9c0b780.png)
;②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b59efa7c1639b74556f993f0a3c6e979.png)
,则
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5eeb69dcd17cd8448b0ed90fc02a7f3c.png)
;③若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dea291e25a168aca912fd61036fc4145.png)
,则
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c0aa2ef928b6e3341d0a0dc6d8055b9.png)
;④若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dea291e25a168aca912fd61036fc4145.png)
,则
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10a7e4dcebd24c843379926de9c0b780.png)
.
2021-03-03更新
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65次组卷
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1卷引用:海南省海南鑫源高级中学2019-2020学年高一(艺术班)上学期期末考试数学试题
2 . 以下正确命题的个数为
①命题“存在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a53e9afe7750a0649a3ccd6c8fb4e68.png)
”的否定是:“不存在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b575835b237c635e5e0f808cc7b341e.png)
”;
②函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edd2fbd3408af0b85d0266f40ea04144.png)
的零点在区间
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a59a58bea5cd9d78c66dd7d6730d5f2.png)
内;
③若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
满足
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d87cd4403487962c38c8707ba3ab3fa3.png)
且
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7df0ddc9dc1d3928ad558669f792d16c.png)
,则
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0ac9c14ec283066e7c897dbdda951e1.png)
=1023;
④函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6e1d0b08c8f9eb98175214071d4a8f5.png)
切线斜率的最大值是2.
2016-12-01更新
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1061次组卷
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2卷引用:2012届海南省琼海市高考模拟测试理科数学试卷