已知函数
.
(1)求
在点
处的切线方程(其中
为自然对数的底数);
(2)当
时,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a1f250516fdeda429f8ee1eb7985a23.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf4dde954ab58019970e727bac75321e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6dcd143a57a268a5a8ef486e2a4d5c0a.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5967cc62862986840af4dd29df4bcc41.png)
更新时间:2022-07-13 19:07:35
|
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【推荐1】如图.已知抛物线
,直线过点
与抛物线C相交于A,B两点,抛物线在点A,B处的切线相交于点T,过A,B分别作x轴的平行线与直线上
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(1)证明:点T在直线l上,且
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfc19f6ca36aed5aed419bbb3f6c5e86.png)
(2)记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68d12ce0fd66bf89b3c55d0fa01c63a9.png)
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适中
(0.65)
【推荐2】直线
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图象上任意一点
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(1)若
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(2)函数
,判断
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/661249bf6499017f9e5e03db3fcd93d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7775aa57ca0e62216f3039ed88dceed0.png)
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(2)函数
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
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适中
(0.65)
名校
【推荐3】已知函数
,
为自然对数的底数.
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(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
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(2)当
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您最近一年使用:0次
解答题-问答题
|
适中
(0.64)
【推荐1】(1)设
,试比较
与
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(2)是否存在常数
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adc3e5be1796493161a4df7e28a6f6b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bc3a5082e00effe19d0e896805fb43b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(2)是否存在常数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60aaae2faac3996688f00ab4ce66c830.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5625d8eab46218b91fe5fadad2125ab9.png)
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