名校
1 . 若
则
的范围是_______ ;
的范围是_______
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a64a4b48bad2dcfcf90c255336917ff2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fd1f0ace9ca0b79929e73af6c201c2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72850427e83ff19a24305783e080b280.png)
您最近一年使用:0次
名校
2 . 已知
则
的最大值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5adb0e2693fea877aaf43a717d5dedf0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f96f48ff5fc76d0fb22988b4f8c962e.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2019-12-31更新
|
180次组卷
|
2卷引用:辽宁省丹东市凤城一中2019-2020学年高一上学期9月月考数学试题
名校
3 .
均为实数,下列叙述正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
A.若![]() ![]() | B.若![]() ![]() |
C.若![]() ![]() | D.若 ![]() ![]() |
您最近一年使用:0次
名校
4 . 已知
且
,若
恒成立,则实数
取值范围是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2a9344f4fca7b9779ca7720e5277ea6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04645353d91a5beb6d02c06bb62683a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecf0760b8fbbeb6f2a90607348fd78a2.png)
![](https://img.xkw.com/dksih/QBM/2015/11/12/1572286908973056/1572286914723840/STEM/ba7da8dde1254236b5597921651a1677.png)
A.(-4,2) | B.(-2,0) | C.(-4,0) | D.(0,2):学 |
您最近一年使用:0次
2016-12-03更新
|
613次组卷
|
4卷引用:辽宁省丹东市凤城一中2019-2020学年高一上学期9月月考数学试题