1 . 已知复数
,
满足
,
,则
有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af68f652b4c13657ffddf3c9e7eb262b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa224ed9be8766a4d0b5138bd57de0f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4452665b99b50e5377a61435454df121.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7484b2e316bbf7ca0d04e4fe8e92e516.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4a9ba13c16ce6e6d3260452597f2859.png)
A.最大值![]() | B.最大值![]() | C.最小值![]() | D.最小值![]() |
您最近一年使用:0次
解题方法
2 . 设
,若不等式
恒成立,则实数
的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/848c33e3506416358d9f0d3ee66f67a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/950ad6df4bc0569bb9aa7d1e04180944.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4887473a8091e1ef53a169cc9f211e3a.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
3 . 已知函数
.
(1)求函数
的值域;
(2)若函数
的最大值为
,设正实数
,
满足
,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89efead629b9e8bcb4199cb875064d2c.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e0ba25ed63bc3ac6412d4a1dc876928.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f008cea432b68934066d32243ccf69bf.png)
您最近一年使用:0次
名校
4 . 设函数
,
,其中
.若
恒成立,则当
取得最小值时,
的值为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05183fca410df27fc3d69d61bd526486.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66f0ca536621ec8db02707ba65917029.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/773ca22fc12ade9e60dbc749ba5cfa73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cf322b61457bd0bd7484b4349f537e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20d6fc9b90f370fbb27552876b650f8f.png)
您最近一年使用:0次
2020-05-25更新
|
437次组卷
|
4卷引用:江苏省扬州中学2019-2020学年高三下学期4月月考数学试题
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