名校
1 . 有以下四个命题:①在
中,
的充要条件是
;②函数
在区间
上存在零点的充要条件是
;③对于函数
,若
,则
必不是奇函数;④函数
与
的图象关于直线
对称.其中正确命题的序号为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca51be437b1a97ca92aa1159ab71102c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19dc38d888741a1b2e95fe0773a48c38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25f114df5ceabdb7e5fd3fdad4eaf056.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41ac161789cda0e6ab9447b4b4815777.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/928fdf8d1c1289b1a4de1975152b6537.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c67f5cfce32b3ed37987a4baa430062.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26efb9f32f6cb608753f9189c6b48644.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
您最近一年使用:0次
2 . 下列命题中正确命题的序号为_______________ :
①函数
的单调减区间为
,k
;
②函数y=
图象的一个对称中心为
;
③函数
在区间
上的值域为
;
④函数
的图象可由函数
的图象向右平移
个单位得到;
⑤若方程
在区间
上有两个不同的实数解
,则
.
①函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/113083fbf1400914c80b7b679fa63f14.png)
![](https://img.xkw.com/dksih/QBM/2015/7/8/1572172167487488/1572172173254656/STEM/d4ef4890f14f4bafac43eee496ff991f.png?resizew=129)
![](https://img.xkw.com/dksih/QBM/2015/7/8/1572172167487488/1572172173254656/STEM/342ab7b6168d4d93b3b586b7e37a3fd2.png?resizew=28)
②函数y=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a668cd2c81ba19a5a11dff29f1be85b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccceca659ab0c42fd51c8d1f3f717ee8.png)
③函数
![](https://img.xkw.com/dksih/QBM/2015/7/8/1572172167487488/1572172173254656/STEM/9bf0b21edf144ccbbda19f59bd5f5d4e.png?resizew=109)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ace4011964ee004dabab2f95246cd86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77ba3b9ce15ff53257e782ae531e655e.png)
④函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58c65d71e57e6e7697e2f627dcd58583.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2ca9c2e84eabc66bb2b9e1aeee0ed3b.png)
![](https://img.xkw.com/dksih/QBM/2015/7/8/1572172167487488/1572172173254656/STEM/f673427437f742a7ae25a17eaff80ba2.png?resizew=17)
⑤若方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d84a39cdd054a65e2b90c6225587ffb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71b77857e15ae11fc94a5e33bfc12d26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6870d642d561c21030b94d414ebe9e7.png)
您最近一年使用:0次
2013·辽宁沈阳·一模
3 . 下面四个命题:
①把函数
的图象向右平移
个单位,得到
的图象;
②函数
的图象在x=1处的切线平行于直线y=x,则
是f(x)的单调递增区间;
③正方体的内切球与其外接球的表面积之比为1∶3;
④“a=2”是“直线ax+2y=0平行于直线x+y=1”的充分不必要条件.
其中所有正确命题的序号为_______ .
①把函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a717eff37b12719ce3a2d1133a567059.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d88591679796c52024d11c4de641bdb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36c191fdfd08fb94ba6ed45c71f0fbeb.png)
②函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16b7ac6aa2ea754de988af76b40c7c3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/418e13befb3ed159facdbd5aaa9bc49c.png)
③正方体的内切球与其外接球的表面积之比为1∶3;
④“a=2”是“直线ax+2y=0平行于直线x+y=1”的充分不必要条件.
其中所有正确命题的序号为
您最近一年使用:0次