已知函数
.
(1)若
,讨论方程
根的情况;
(2)若
,
,讨论方程
根的情况.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b425ade34f7f81d466e629f9e5ec070.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7830f0db85be03bbae2b0f48e752be82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccef4a2ec66415c33ee09b4e2109dc0b.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58b61789e005200ec7625c7b2aa08f97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/caaf60f9073560ce82771ad9972bd7ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c366021baa8a140bd922d1475645e30.png)
更新时间:2018-05-07 18:30:36
|
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解答题-问答题
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较难
(0.4)
名校
解题方法
【推荐1】函数
,其图象与
轴交于
,
两点,且
.
(1)求
的取值范围;
(2)证明:
(
为
的导函数).
(3)设点
在函数
图象上,且
为等腰直角三角形,记
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e15f2f74fba6a77b73e1fc059ae90de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2086e2e0fef338f69cf29237efb9e17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f90045c2bac484d4a65223accdc47d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26d8dafc71b106f39f4e15442220897b.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/133c30d6ca96a4d8de293da20fbe8f22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a4b04824a308519a61318a82aa97a05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(3)设点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a73f6325db462bf8e4471ae7fcb2544.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90212f1ea6290f2ae947b47bed84ccbd.png)
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较难
(0.4)
名校
【推荐2】已知函数
(1)证明:函数
在区间
存在唯一的极小值点
,且
;
(2)证明:函数于
有且仅有两个零点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f8fed09e3b82d50dce81e6c9bfe0613.png)
(1)证明:函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b3f81841df5843d6058e09161bb9c21.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ed09038dc42e585a27f65ea31424a6.png)
(2)证明:函数于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
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解答题-问答题
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较难
(0.4)
名校
【推荐1】已知函数
.
(1)当
时,求曲线
在点
处的切线方程;
(2)当
时,试判断方程
有几个实数根,并说明理由;
(3)若
(
是自然对数的底数)时,不等式
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/216508755ec5dbde33c7ffdd61b189fa.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e94f16d5ed858699bfea5039a7bf8ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bea9227dd0104da58e0c40952cc87ed.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf0086b054ef120408acac806a1b1318.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f8bfb563f79688d136e0cb958b5153c.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5800d0851ad72424ee808d08d4e4561.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6dcd143a57a268a5a8ef486e2a4d5c0a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7febf5b408f1f9011ca27033d51faa53.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
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较难
(0.4)
【推荐2】已知函数
.
(1)当
时,求曲线
在
处的切线与两坐标轴围成的三角形的面积;
(2)若关于
的方程
在
上恰有三个不同的实数解,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c9aae197945af5a63761d71a7790513.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5828873f8369183faf71181cda5b61d2.png)
(2)若关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf4c71680472212ab38e704ecf41da63.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7dcdd87d593df4a5c5e98d47fe1cfa6.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
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较难
(0.4)
【推荐3】已知
,
为
的导函数.
(1)若对任意
都有
,求
的取值范围;
(2)若
,证明:对任意常数
,存在唯一的
,使得
成立.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9193bb20bf616eb89eea4f918531365.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/724340d69477c0ec2418c392b22b1cab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(1)若对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6acb0f1ac694dd177e99fc385f23318.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d41acc47493556617fe7b9e55093d10.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d701701514d29d22d56e8a35f797d267.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60978743068411d86c577d4406cc1a81.png)
您最近一年使用:0次