解题方法
1 . 已知
,使得
成立,其中
为常数且
,则下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d848ba70bdc133d65976c46e383ddcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e83eb10d35ac2274729bf578ac0a4801.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/280860dd039e1305a5ccc455f63e8223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f4c78214e43a8b93f2a57072033cbcf.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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名校
2 . 给出如下关于函数
的结论:
①对
,都有
;
②对
,都
,使得
;
③
;
④
,使得
.
其中正确的有___________ .(填上所有你认为正确结论的序号)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5220c1d29955df47343122a463c46a92.png)
①对
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6422b9c2e93a91fe9e39ce4d9dabb0fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f66d61d5f66d68b4c4a2a25fd7103621.png)
②对
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b325f9ae2fde7a61e30033e4387a957c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5035928ab72ba58edd33ed35fef9f757.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f5148c90b6d762234102e5bf5ca4c5c.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b14cb0b30e513ff8d1abd326e6f7d7f3.png)
④
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/045748e3e58bfc29cf00ea0b80d2d56b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a89fc72bb0889c759e429be4e675691c.png)
其中正确的有
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2021-05-21更新
|
720次组卷
|
3卷引用:四川省成都市第七中学2020-2021学年高二下学期期中数学(文科)试题
四川省成都市第七中学2020-2021学年高二下学期期中数学(文科)试题河南省新乡市辉县市第一高级中学2020-2021学年高二下学期第二次阶段性考试数学(理)试题(已下线)专题03 《导数及其应用》中的压轴题-2021-2022学年高二数学同步培优训练系列(苏教版2019选择性必修第一册)
名校
3 . 已知函数
,则下列命题为真的个数是( )
①
的极小值点为
;
②若存在
,使得
,则整数
的最小值为
;
③若
,则当
时,
有两个零点,且其中一个零点所在的区间为
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9a45a166e350e41316ff1bb39b23230.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df87927dc77cadd6e99be244d8ed8e22.png)
②若存在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee21db6628e4db3f5831370549fa96b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92755ed40510a358dcb77392749fd792.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
③若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d0ebe1f9cf6eef40ef0f26f2afa77f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fb58461e483f28100cf5bc88f33d870.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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