已知函数
,
(1)若
的图像过点
,且在点P处的切线方程为
,试求函数
的单调区间;
(2)当
时,若函数
恒成立,求整数
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c401c2b8baabe90a478a500b4e6a12a9.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88aa54f855334cab19d8d19ca9aea9dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa6342e0a5a8942cfb1cf535ceb2c50d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/143b917df0520097be222accbddf9394.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc640487cd26db7a81b6bc4f28c66523.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
更新时间:2018-10-21 09:49:35
|
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解答题-问答题
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较难
(0.4)
【推荐1】函数
.
(Ⅰ)求函数
的单调区间;
(Ⅱ)若函数
存在两个极值点
,
,记过点
,
的直线斜率为k,问:是否存在实数a,使得
?若存在,求实数a的值,若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4efb3ccebd5cc3afd93588def381573b.png)
(Ⅰ)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(Ⅱ)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.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/b45dddee525114c09ee0d1205aed6e7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b3b54e0dcdc081d45fb3df933cddc29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7005a05b05980350dff020a5161d82a.png)
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名校
【推荐2】已知函数
.
(1)求
的单调区间;
(2)若
,证明:
(其中
是自然对数的底数,
).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6da1cf990b217e4673bb294989b1aec7.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1fe2115d883d13561e28006d3f6143b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb788e9c92435bf2484a947180d5815d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/168b3e4b1d6f04226fa2687a72a268b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d218992d1942266d7208e476d0c4100.png)
您最近一年使用:0次
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较难
(0.4)
解题方法
【推荐3】已知函数
的点
处的切线方程为
,
,
.
(1)求
,
的值;
(2)若不等式
对任意
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91ed25e5bf7350a05ee3675a70352daf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5c887da0c850acf41ab249cc262ae39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f5110e212091b24df2d872ff367af05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d285a4c557fc9748105b62ccd94b7859.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(2)若不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f7f7c4fa428b96a939353d6e7a0ad33.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/599b100243599b6dc57c333a829c129f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
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较难
(0.4)
名校
解题方法
【推荐1】已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8563af99f3bbad06fdc920eefa8bfc6d.png)
(1)当
时,证明
在
恒成立;
(2)若
在
处取得极大值,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8563af99f3bbad06fdc920eefa8bfc6d.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/200f24e682c93e02a87f3f9d57dc5d40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b852206f2a58b44d0fbf230b28fc54d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bdfed8d6862125dc1fecfce0322a750.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb45f673c56a289ea78831c9237e8d20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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解答题
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较难
(0.4)
解题方法
【推荐2】已知函数
,
.
(1)求
的单调区间;
(2)若
图象上任意一点
处的切线的斜率
,求
的取值范围;
(3)若对于区间
上任意两个不相等的实数
都有
成立,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/987ed9ee523ec88925b94f6db8c9ced3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b9509ba65b109117aceaa2767a89f05.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/caf0d139c9810361b4971904a943856b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/536dd34aefb1bad10b39069da7208f1b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)若对于区间
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f094b4fcb0df74103b78e478bd4448d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aafa44c4a404f62f54460dbcd7b8a0fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次