已知f(x)=1nx
2x+1,其中a≠0.
(1)当a=1时,求f(x)的极值;
(2)当a>0时,证明:f(x)
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea257ff4d7c10c1cccb324fd4daca43c.png)
(1)当a=1时,求f(x)的极值;
(2)当a>0时,证明:f(x)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/095c0597ee2d3ef2e7cc8b0fc93c5d57.png)
更新时间:2019-12-31 20:40:11
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解答题-问答题
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适中
(0.65)
解题方法
【推荐1】设函数
.
(1)求函数
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(2)若
,使得
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的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65abcfc43d4997535c54458d9c64cfe2.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/437606fd10dcb4ffb6045b530dcd3691.png)
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![](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)
名校
解题方法
【推荐2】已知函数
(
).
(1)当
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的极值;
(2)若函数
在区间
上单调递增,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b0f2979fe3b7b0493370ceadff9672e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10bbdef421c976962a270a2beabbad91.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed6d804ef44bfc64f824b0ccef71765e.png)
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您最近一年使用:0次
解答题-证明题
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适中
(0.65)
【推荐1】已知函数
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).
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22dd8b3dc4c609bab82d356a5cc2208d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20849c00c47cbdc43f18d53341b6c4e5.png)
(1)讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffc62e8733ac2da345d509e1428f0fa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df4f647724654e761774d92b838d224a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d3b996c49d39a8c7bcc029c39497970.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】已知函数
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在
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3056ae4755f2ba798f478fdb79f1a5e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce50382440781c5c10fca05be1af091.png)
(1)确定a的所有值,使函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8938db94f49dcbe0c383fba0241bb0da.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/971905ea129aec0ca7c325f60260c7e1.png)
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