1 . 已知函数
,其中
为常数.
(1)若
的定义域为
,求
的取值范围;
(2)若
的值域为
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c3dfe61d65b51987d77ba0c891a1359.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a43b2faa4f81f32d94612dce724e772b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a43b2faa4f81f32d94612dce724e772b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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解题方法
2 . 给出下面两个条件:①函数
的图象与直线
只有一个公共点;②函数
的两个零点的差的绝对值为2.在这两个条件中选择一个,将下面的问题补充完整,使
的解析式确定.
已知二次函数
满足
,且______.
(1)求
的解析式;
(2)若函数
,
,
,
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eefa44964db83759aff6fc8dd7ef8f28.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
已知二次函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/331d5e308cd5469e0f28a8d75f79903f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c42b6975b22e99c0148e6952d174ebba.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73b3451cd3d00ce4fbdff7529fea5d08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f276a1d87f3efcb1dc55c5ad9738f138.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8baf62fb1df09295e1e1e0e32d50218.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cdba7dce610d36e249d77018f470b23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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3 . 函数
的单调递增区间为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a08ede79442552f25b21b7001e66dba.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
4 . (1)计算:
.
(2)设
,
,试用
,
表示
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51728887d2f6c8b00b22509ed42e0feb.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cf3935ea958cb302fcd9d89a9182b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa0a0714aa596c45f1d1713bd1b3d287.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/31e4b82cb8c0eee89c20390cbc6e7eea.png)
您最近一年使用:0次
解题方法
5 . 下列命题为真命题的是( )
A.若函数![]() ![]() ![]() ![]() |
B.函数![]() ![]() |
C.当![]() ![]() |
D.若![]() ![]() ![]() |
您最近一年使用:0次
6 . 已知函数
,则
的值是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/263e3a3f48ff90c80bdd9fea981b9019.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea09ab225081c171f6d54afec5ffaad9.png)
您最近一年使用:0次
解题方法
7 . 已知
,
,
,则
的最小值是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/061813f1ec633c5c4c393c4de7938322.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88915165cf138bc2d4beed3a61aa2810.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f5abf90e8307ef8dcc1030ebe7fd06a.png)
A.4 | B.10 | C.12 | D.16 |
您最近一年使用:0次
解题方法
8 . 已知
,
,
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ef2a45773db8d347f0cfa4e4fca7fd5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/728385ddc087f5772ce539efb9ffa1c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fcd1db3a6c34a59c3c8a16e175c46a3.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
解题方法
9 . 函数
的定义域为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9774ebc36318b652300c3183a36c038f.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
解题方法
10 . 已知函数
.
(1)试判断
的单调性,并用定义证明;
(2)解不等式
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6706835b3989ddd998d29f3a38d89f67.png)
(1)试判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
(2)解不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81a623de9e7a6c8d4d452f9e938b7a3f.png)
您最近一年使用:0次