1 . 已知函数
,其中
.
(1)求函数
的单调区间;
(2)证明:函数
只有一个零点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91c836dcd86f5bc9b232e09ade11f906.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)证明:函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
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2 . 已知函数
,函数
是函数
的反函数.
(1)求函数
的解析式,并写出定义域
;
(2)设
,若函数
在区间
内的图象是不间断的光滑曲线,求证:函数
在区间
内必有唯一的零点(假设为
),且
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/281f9aae7914fa58b46665ae402af43d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a1cfb60420ff7e72c1b9d64f69ae063.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8196a483c250f34de763a9d66a290f55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e915b67f8f747698b8b46d37bc453667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab1242ec96ac54e2fd418988d5190a88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e915b67f8f747698b8b46d37bc453667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc6554ac3dff4a59833e407db887f6e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60440d5dde56b026d8568075463a988a.png)
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10-11高二下·黑龙江·期末
3 . 已知函数
,其中
,
在
及
处取得极值,其中
.
(1)求证:
;
(2)求证:点
的中点
在曲线
上.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/613dd40b05813eb1b688c890c6a9e978.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/655014aa633dbd4d41e7724e7a7d5364.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b794b9661e9fea21b9b9b677e8689b3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6f7b16d65f1b2b8bea8cf4a83fde925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29506a6912c0dce7692a673600a30122.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be01087486cda61fd9e2f890c0028c1c.png)
(2)求证:点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/619afd3bbc81d29122afa1bddd07f9f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
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12-13高二上·福建泉州·期末
解题方法
4 . .已知函数
的极大值点为
.
(1)用实数a来表示实数b,并求a的取值范围;
(2)当
时,
的最小值为
,求a的值;
(3)设
,
两点的连线斜率为k.求证:必存在
,使
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9a6fa02d56e7338c83cf1ae518e3ebe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99c6875d552e9fff3c7d655f3a59b166.png)
(1)用实数a来表示实数b,并求a的取值范围;
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6070f2ee5e48cce77eb4a2cb9f11ccfb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/459c84c9addfbd1cdd0a877ba7c584e4.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24f5e21076f4f188625d0f69e765c958.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1be5b102c66290911df81f1d1c6badf8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b3ae261408e4c31ae4f1bc70351793a.png)
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12-13高一上·江苏淮安·期末
5 . 已知函数
.
(Ⅰ)利用函数单调性的定义证明函数
在
上是单调增函数;
(Ⅱ)证明方程
在区间
上有实数解;
(Ⅲ)若
是方程
的一个实数解,且
,求整数
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/136eba164f5ad2410edcad3e890cd12b.png)
(Ⅰ)利用函数单调性的定义证明函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d479a86a1711709b2d100fe4daf3e7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cead849c0dc4a82285808a7e081ad75c.png)
(Ⅱ)证明方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cbb91616bc08f47baa469350343243d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbfd6666e9bdb38eabd1167040464d73.png)
(Ⅲ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5cbf1211335bcbc0ebb05414669eda0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cbb91616bc08f47baa469350343243d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7825fbfe013b54a59ff82782dbcd26d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
您最近一年使用:0次