解题方法
1 . (1)求函数
的单调区间.
(2)用向量方法证明:已知直线l,a和平面
,
,
,
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9b6a91900d0dfa6296cdee22fdd6fe6.png)
(2)用向量方法证明:已知直线l,a和平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c29f79e8e51e7c35213df9ebe697bcc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72d2a947e3fdc214d40a7d3f54679a73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c9b2c3117321788078867bd0701743b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ad25ad7785af488a004cae4436019ff.png)
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解题方法
2 . 已知函数
的图象过点
.
求证:(1)函数
在
上为增函数;
(2)用反证法证明方程
没有负根.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45783a196baabce3a8d876e5cc128c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3953bfeb398bab2b2ba61b3e6bf0a22e.png)
求证:(1)函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f00bba28ce932fbcc82ed562994f031.png)
(2)用反证法证明方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3047d4ab078dafc06c047bcbf0a6ffaf.png)
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名校
3 . 已知函数
.
(1)判断
的奇偶性并证明;
(2)求证:
在
上是减函数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5347d53d531d6378e70f8b4d5a6906c.png)
(1)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84a7a4a037a4dfe973f1eb683d93d799.png)
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4 . 已知函数
的定义域是
且
,
,当
时,
.
(1)求证:
是奇函数;
(2)求
在区间![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09bce7c5de6e43a203eb98a7c23f8985.png)
)上的解析式;
(3)是否存在正整数
,使得当x∈
时,不等式
有解?证明你的结论.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://img.xkw.com/dksih/QBM/2015/7/3/1572163784851456/1572163790241792/STEM/a51771f539164b6e9d9eead0303f5eb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9cda1d250b465616dbc1fd75a2359c0e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67c3cfe479362ebb78ff9951d1d9f083.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec6c48591cae0bcf7ae6c8d589527c72.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dc4e3775c850f1c1804f9eb7a70153a.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09bce7c5de6e43a203eb98a7c23f8985.png)
![](https://img.xkw.com/dksih/QBM/2015/7/3/1572163784851456/1572163790241792/STEM/0e39cf5721f84387a7307e4ae19b2041.png)
(3)是否存在正整数
![](https://img.xkw.com/dksih/QBM/2015/7/3/1572163784851456/1572163790241792/STEM/c0a95e15d16643a2a69d6bd21d5d9265.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9da7f1da7e1c7aeaf845415de9aec0bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54218478418966f351be0d622a834f07.png)
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2016-12-03更新
|
203次组卷
|
2卷引用:2014-2015学年浙江省东阳中学高二下学期期中考试理科数学试卷
5 . 设函数
为自然对数的底数.
(I)当
时,函数
在点
处的切线为
,证明:除切点
外,函数
的图像恒在切线
的上方;
(II)当
时,设
是函数
图像上三个不同的点,求证:
是钝角三角形.
![](https://img.xkw.com/dksih/QBM/2016/5/31/1572663424352256/1572663430307840/STEM/ed7616e9869742c995ae61e6dbe53aab.png)
(I)当
![](https://img.xkw.com/dksih/QBM/2016/5/31/1572663424352256/1572663430307840/STEM/a596ecfd6e6442b0929710d03832864e.png)
![](https://img.xkw.com/dksih/QBM/2016/5/31/1572663424352256/1572663430307840/STEM/ec6dbbc762c84aa0a356fb60a0c803d7.png)
![](https://img.xkw.com/dksih/QBM/2016/5/31/1572663424352256/1572663430307840/STEM/799a5f024f4b4c968f07b8fd04be59e9.png)
![](https://img.xkw.com/dksih/QBM/2016/5/31/1572663424352256/1572663430307840/STEM/c9a76dcd5fae4d5e9b61f124750b55c8.png)
![](https://img.xkw.com/dksih/QBM/2016/5/31/1572663424352256/1572663430307840/STEM/799a5f024f4b4c968f07b8fd04be59e9.png)
![](https://img.xkw.com/dksih/QBM/2016/5/31/1572663424352256/1572663430307840/STEM/ec6dbbc762c84aa0a356fb60a0c803d7.png)
![](https://img.xkw.com/dksih/QBM/2016/5/31/1572663424352256/1572663430307840/STEM/c9a76dcd5fae4d5e9b61f124750b55c8.png)
(II)当
![](https://img.xkw.com/dksih/QBM/2016/5/31/1572663424352256/1572663430307840/STEM/640669c44a164f3186bad5aebf273116.png)
![](https://img.xkw.com/dksih/QBM/2016/5/31/1572663424352256/1572663430307840/STEM/3a306a184aa74b829628055c4b8af2b4.png)
![](https://img.xkw.com/dksih/QBM/2016/5/31/1572663424352256/1572663430307840/STEM/87c547d125ad4d6c8311da2965f5386d.png)
![](https://img.xkw.com/dksih/QBM/2016/5/31/1572663424352256/1572663430307840/STEM/cea054dbe1294d2f87e5ba91661bc1ad.png)
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2024高三·全国·专题练习
解题方法
6 . 已知函数
.
(1)当
时,求曲线
在
处的切线方程;
(2)若当
时,
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63cf0b39c50f7b1de395431b02057251.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa4c355f11471a38f5583a434a1ddeb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d29c5c266a6d834a244c1f50c8f9848c.png)
(2)若当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4921923069c4f38a0af1ff8637e35b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5539cc3a6a9b1bda8013f0fd6760b4a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51f5f7a36e251bbc424ccc127ebb2881.png)
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7 . 求证:若
,则
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38f0e9c04402a0ffdaa25c3e3c82c7dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c12f03252553a84eba84fdc8467adfdf.png)
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解题方法
8 . 已知函数
,
.
(1)若
在点
处取得极值.
①求
的值;
②证明:
;
(2)求
的单调区间.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5ff251cda384c3a65111ba37e8c7b0e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22dd8b3dc4c609bab82d356a5cc2208d.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5828873f8369183faf71181cda5b61d2.png)
①求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
②证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f81ed7f6a4475e0fa682fa81ee747da3.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
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9 . 求证:对于
,都有
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d96b743603ab1c10330622f16db78dbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaa502f05da9eb572ad7a87127ec04d8.png)
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