已知函数
.若
有两个零点
,且
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f9878b55caab88f0d33eee5bac55e5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd8ca3aa2d1ba52e82613d0d65d800e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6657f5dd2a7723fcee6a7a10ca21d2d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29f717884266d060fa97178ea3f8b57c.png)
2024高三·全国·专题练习 查看更多[1]
(已下线)专题03 利用导数证明不等式(四大题型)
更新时间:2024-05-23 09:30:27
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相似题推荐
解答题-证明题
|
适中
(0.65)
名校
解题方法
【推荐1】已知
,
,
(1)若
在
处取得极值,试求
的值和
的单调增区间;
(2)如图所示,若函数
的图象在
连续光滑,试猜想拉格朗日中值定理:即一定存在
,使得
,利用这条性质证明:函数
图象上任意两点的连线斜率不小于
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c566b6273b93a7231f891a0889579227.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2d60df31661ec394cdec5f0ad6bac38.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0843a602fe240e5798bcbc7d54b19ddb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)如图所示,若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ca6d68f1de3e70696f1d5d60affe6ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd7fc0ca8a82663b87fa36afb9c4ec09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f3fcc5073759c73c7a63c8818eca5c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a1cfb60420ff7e72c1b9d64f69ae063.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a947d16d7293baf95e9274b9a0f5db78.png)
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解答题-问答题
|
适中
(0.65)
名校
解题方法
【推荐2】已知函数
(
即自然对数的底数)
(1)若函数
在
是单调减函数,求实数a的取值范围;
(2)在(1)的条件下,当
时,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/341f63ca683ee757a9c1d1e3f9a18dbf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc6429cc7379d0bd540638b5de0d0ca5.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d79fe3414b32bbd1190b41ed8307f905.png)
(2)在(1)的条件下,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2aa78c96db411c9e1e939ae16de78d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95c5a69bf649e735ccc8389c780d7c83.png)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐3】已知函数
.
(1)讨论
的单调性;
(2)若
对任意
恒成立,求
的取值范围;
(3)证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ce4245bdffa790d352a08110ca34034.png)
(1)讨论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/197bd80b7b8e6792a275aee0b317560a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/543ac84dd669473cb34d58e378d90b34.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
解题方法
【推荐1】已知函数
.
(1)若
,求函数
的极值;
(2)若
,
,有
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b9b724f6a555f72fbab2cd02659c9c2.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c7a1d739890a8951586e23b78b035bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f96b4461a4233c94cdf993c54152107b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2051cf2fa0fef55fbc3ada08090137a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a049ab4657621957a5202784d8705d7.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
|
适中
(0.65)
解题方法
【推荐2】设函数
.
(1)求
的单调区间和极值;
(2)若对一切
,
,求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b516e738a4c1972226902252f5d7106.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若对一切
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0c04fcd62fc9d45efda4c2e22930a5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9f2416d1f75a45a314331146550832e.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
解题方法
【推荐3】已知函数
(
为常数).
(1)若
是定义域上的单调函数,求
的取值范围;
(2)若函数
存在两个极值点
,
,且
,求
的范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73adbaefbb2773668a0b4c6270f1f581.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若函数
![](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/ffd888afdcfdb3e91a157d50f65e915e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/025925c1a437e39cfdda7fcd51146a0e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13e21ac584efecd770c2dd9d2e83803a.png)
您最近一年使用:0次