已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83ca79c133d3ed69b748f22369887fdf.png)
(1)当
时,证明:
;
(2)当
时,不等式
恒成立,求证实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83ca79c133d3ed69b748f22369887fdf.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dc9ede2e55724383dd1093fc7fcdb59.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2fb40a36a293471742ce75f6b9635b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85525eafd8111e233809ed6d5aa5ce7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
更新时间:2019-09-29 20:57:57
|
相似题推荐
解答题-问答题
|
适中
(0.65)
名校
【推荐1】已知函数
.
(1)若曲线
在
处的切线斜率为0,求实数
的值;
(2)记
的极值点为
,函数
的零点为
,当
时,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/085787dfe1e1d63a172deee2218b2582.png)
(1)若曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a7dd41d99c71a7cbb44f0e0ad70f6b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/900ba908f2429c0f5779b576f86ef7fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26d8dafc71b106f39f4e15442220897b.png)
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解答题-问答题
|
适中
(0.65)
【推荐2】已知函数f(x)=ax﹣xlna(a>0且a≠1).
(Ⅰ)求函数f(x)在点(0,f(0))处的切线方程;
(Ⅱ)求函数f(x)单调区间;
(Ⅲ)若对任意x1,x2∈R,有|f(sinx1)﹣f(sinx2)|≤e﹣2(e是自然对数的底数),求实数a的取值范围.
(Ⅰ)求函数f(x)在点(0,f(0))处的切线方程;
(Ⅱ)求函数f(x)单调区间;
(Ⅲ)若对任意x1,x2∈R,有|f(sinx1)﹣f(sinx2)|≤e﹣2(e是自然对数的底数),求实数a的取值范围.
您最近一年使用:0次
解答题-问答题
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适中
(0.65)
【推荐3】已知函数
(
,e为自然对数的底数).
(1)若函数
有两个零点,求实数
的取值范围;
(2)函数
,
,记
的极小值为
,求函数
的值域.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34a92c95cb91837920e07bfc5abd87ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22dd8b3dc4c609bab82d356a5cc2208d.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83a88b86d8cfacd2d9cb56ce5bf96aa9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d18bb77e8a977291c65de6ce9435ce8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77a90170d7ef5ff6d1d63517c166f7a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77a90170d7ef5ff6d1d63517c166f7a9.png)
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解答题-证明题
|
适中
(0.65)
解题方法
【推荐1】已知函数
,
.
(1)当
时,求函数
的极值;
(2)已知
,求证:当
时,总有
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b3861fc1a50732d928467852a6bd8e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fa6aca1b0801e2ebf38631f2dfbe2b4.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a882037b9ce104ecc496e0f31a139361.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f0d68648b10fce54dfc19c5ee60086d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6e2e79843faf62dde86bf858d1e0569.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4acda6b6464db27e1ec18a1522406d2.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
名校
解题方法
【推荐2】设函数
.
(1)当
有极值时,若存在
,使得
成立,求实数
的取值范围;
(2)当
时,若在
定义域内存在两实数
满足
且
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c821186ea33f42c80f1ebb419d22760.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef513c07cd4f9b4ec4ed0527266e14a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf0086b054ef120408acac806a1b1318.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be07753eab86fa9c439a65db51c9a9e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26d8dafc71b106f39f4e15442220897b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/859458471c86ae39e0cc42d2d960d03e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03ca13a93b5f401c0d39ba52b0cffcb0.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐1】已知函数
,
.
(1)当
时,求
的极值;
(2)若不等式
在
时恒成立,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bc3c1a07ad819a854d4892756fe047f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40e72f6b2ef3329828cb8fc873eeba7c.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8493a0cd10d3d0399173c04163740a38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5dd0b0bc287982eabff6b81fc5868c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4921923069c4f38a0af1ff8637e35b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
解答题-问答题
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适中
(0.65)
【推荐2】已知函数
.
(1)当
时,求函数
的单调区间;
(2)若函数
在区间
上为减函数,求实数
的取值范围;
(3)当
时,不等式
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/463330319a30ab7f8eb4bc18ce7ac917.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df2806feb02d7c96484db00771ae757a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c29d76a0016938b70255fd04b30ec2dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f408648547408fab1ec0e703a989baaa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72c579db2839987c3d2d77a1ec05a284.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐3】已知函数
,
;
(1)求
函数的单调性;
(2)设函数
,对于任意的
都有
成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15ff2bfb24c451ceabff9ee8b0c6c427.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72d4eeb8a8cbc86e599234440e9d8897.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3e213bbe3b8bf6bee160230389b7e51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba499b88182dfaf2e3aeae5fac565087.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9f5253e0770377a99d6e0ede768fc92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次