1 . 已知函数
在
上是增函数,且
,则
的值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97ccfdd389279f17fb22ba542c045114.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5a325856063c83c6df7b478255c8901.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e43fc8b890adf3d7c394159cfa90b00b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/074c228ffc7b1e306f8410afe7bc4b5c.png)
您最近一年使用:0次
名校
解题方法
2 . 已知函数
,
.
(1)求
的最大值
;
(2)若方程
在
上有解,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/187fed9b2ce0de2b06af21bec2302125.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58119f48aa8860923d1f13dd78a17c62.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01b3ae7e5228fd1acb0d46f6941143a7.png)
(2)若方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/338316b0fe50fdea0f2f75aec4c990dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3aae9c8988f4a48db69cad3308942c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
名校
3 . 已知向量
,
.设函数
,
.
(1)当
时,方程
有两个不等的实根,求
的取值范围;
(2)若方程
在
上的解为
,
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/572fc5c87541aecef5415a615f1bada5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75b8869f9175eba34e6743a18d3e32d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8a1c7bb5733da5eebbf2b3d8ea0a92f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b392ae979e54da7e26bbc2d967a72666.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c99a65cb87c5b4d050b5c0cc66dff4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87d3225dc94f540306b55c70d600744d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3ff8dca35b759d3051b62badd7d76bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e058eeb9cea0d93756125087c6655325.png)
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名校
4 . 已知
,其中
是常数
(1)若
,
,求函数
的最大值及相应的
的值
(2)若
,且集合
,求实数
的取值范围
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d6a8b3d1e74612a516a2c803896d301.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/663a61ad241d5d874c9a9362f0ee917c.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65397f11ea8af736f38debadf420c4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af4cd80d3092f506d6326df7d552eb3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b104867a12d24a353d94858c2fa17c8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ff749734f24c927db782ce4644bba56.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
您最近一年使用:0次
5 . 若函数
在区间
上恰有一个最高点和一个最低点,则
的取值范围是________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b283810112cf7e228f619625ba41cf2a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1924f683f9c883587b48ccddd8f00f99.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/074c228ffc7b1e306f8410afe7bc4b5c.png)
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