已知函数
(
)有两个零点.
(1)求实数
的取值范围;
(2)设函数
的两个零点分别为
,
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c06a308cc09b0c3afed87955dca6e606.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
(1)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)设函数
![](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/9a1cc4329e9ce6769a28037a0884f2c4.png)
更新时间:2023-06-25 22:07:18
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相似题推荐
解答题-问答题
|
较难
(0.4)
名校
解题方法
【推荐1】设
是定义在区间
上的函数,其导函数为
.如果存在实数
和函数
,其中
对任意的
都有
,使得
,则称函数
具有性质
.
(1)设函数
,其中
为实数.
(ⅰ)判断函数
是否具有性质
,请说明理由;
(ⅱ)求函数
的单调区间.
(2)已知函数
具有性质
.给定
,
,设
为实数,
,
,且
,
,若
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5d6243e93c41978871cb23d8e66148d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20d0c99ddd028f0bc3b1d64924ff0f61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f786a5701dc1a8a015e8843c3360151b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a813b5adbf5c7082561237894ba6d599.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4921923069c4f38a0af1ff8637e35b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cc2395f479a7f620dc7a8168f87adef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f2c2e62820db54ca0d6c40aa6fadef7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fbde2170c24819edd47db617810bf47.png)
(1)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f7b185e766962ce57d97360e82f54e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(ⅰ)判断函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/904f7b7f1d38d1ca3d3e60241ec07abd.png)
(ⅱ)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
(2)已知函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a5d8bc28ee110a9540f383828b7d245.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28c68882f2800fded4fb29e05d1bf1f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26d8dafc71b106f39f4e15442220897b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/513cd118822a9636e0d04af9afe980f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0e3f36a6f424089eb52f263c41bb48c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7b68031c3405c23f82fb3f352e44a04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ea1deca2850e28ae2578f503c277a7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/775bf5cae131754ffe414799a55ff91b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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【推荐2】已知函数
.
(1)讨论函数
的单调性;
(2)假设函数
有两个极值点.
①求实数
的取值范围;
②若函数
的极大值小于整数
,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e3b7c78cfba4fa7e853cf90211461b7.png)
(1)讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)假设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f71f0e7ef25e3b1d2d9a73c533b0fdf.png)
①求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
②若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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解答题-证明题
|
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(0.4)
名校
解题方法
【推荐1】已知函数
.
(1)求
的最小值;
(2)求证:
;
(3)当
时,不等式
恒成立,求正数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a96bed0bbafcfae5ed321465e22191.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b446507302d8fc82e9e591efa73bded.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/636289ad84b4a3a51095dd32ca201f94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abb108c0da50664485b52880a4a20514.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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解答题-问答题
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较难
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【推荐2】已知函数
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,且曲线
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(1)求
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(2)求函数
在
上的最小值;
(3)证明:当
时,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1f5e01c96aab191d2519c97debb7931.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7112c7bc629c53fd14c518e32c40de2.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac490af25fb49d4f880bbac29a0ee874.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(2)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ce5af6f2dc5fc70469a5cfb67a6d6ad.png)
(3)证明:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20ff7d35402e08db25a65ad71d45fb88.png)
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【推荐1】已知函数
,
.
函数
在点
处的切线与直线
垂直,求a的值;
讨论函数
的单调性;
当
时,证明:不等式
成立
其中
,
,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cae652a9ab4cc15c67dde301f89867b2.png)
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【推荐2】已知函数f(x)=ln(x+1)+
(a∈R).
(1)当a=1时,求函数f(x)在点(0,f(0))处的切线方程;
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(2)讨论函数f(x)的极值;
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf8daf382c942f0e64ac03c1d13cdd9d.png)
您最近一年使用:0次
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较难
(0.4)
【推荐1】已知函数
.
(1)求函数
在
处的切线方程;
(2)若对任意的
,
恒成立,求a的取值范围;
(3)当a=3时,设函数
,证明:对于任意的k<1,函数
有且只有一个零点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40ba3922028f1d31820a5acd53c1396.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb45f673c56a289ea78831c9237e8d20.png)
(2)若对任意的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58e82c4003d20b36777f7aea584e3dd4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cec02721b2487300eb08db6bd2fbe54.png)
(3)当a=3时,设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab6b28c29a9e823cf1d6c764323d7e15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
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【推荐2】已知函数.
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e94f16d5ed858699bfea5039a7bf8ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5828873f8369183faf71181cda5b61d2.png)
(2)讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d40ba4094d5b8637ccba6a1b9cb7bcb.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf0086b054ef120408acac806a1b1318.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/636289ad84b4a3a51095dd32ca201f94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e27f3e843409e6334c8bb2cb683722f3.png)
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【推荐3】已知函数
,
.
(1)若
在
处取得极值,且满足函数
有三个零点,求
的取值范围;
(2)若
,对任意
,
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7aefa673751e5e86c1874821fec2624c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/606aa29c4036a4089ac4e243190fcaac.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e55aa0a20848c37c1892c567b2315e04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd876a2ed79c64bacc3e64b8ee92735e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf68b3332515cb91760cce1bbcbbed7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24cc8180fa7b13a7292e9a0ad69ec9b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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