解题方法
1 . 已知曲线
在点
处的切线方程为
.
(1)求a,b的值;
(2)求
的单调区间;
(3)已知
,且
,证明:对任意的
,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58a274b0623171972513340511781ccc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5828873f8369183faf71181cda5b61d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f2e4560759a110e4ccc334e3ccea7e4.png)
(1)求a,b的值;
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(3)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b9c008f8fcc8edcd68fb14e0727fa49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bccf433ec08ad06d0e8a7eb53f5143ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/734a6de235c7c5205eb3d81109f04abf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e176b379350d3bbdbb923c2e8435f011.png)
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2 . 定义:设
和
均为定义在
上的函数,其导函数分别为
,
,若不等式
对任意
恒成立,则称
和
为区间
上的“友好函数”.
(1)若
和
是“友好函数”,求
的取值范围;
(2)给出两组函数:①
,
;②
,
,分别判断这两组函数是否为
上的“友好函数”.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a1cfb60420ff7e72c1b9d64f69ae063.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e105760638b22b26ff8bec4354255e4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/724340d69477c0ec2418c392b22b1cab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22add663bd26e87d972a10dc5fd9ada1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2b2c3252d8371afaddf69bcc633f8be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11bb6324279df94decba955e04ccfa9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a1cfb60420ff7e72c1b9d64f69ae063.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e105760638b22b26ff8bec4354255e4c.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32e54f38c13f26cd12acfbebecc83c8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a10e5c7ac3c66e7e269a36119899ef41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)给出两组函数:①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57dff434ff946b8ae010de8d8cfaccb6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ec4fa3b5534a782bbddc28c41826d10.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77b63e6bf2740efd054cfa0d8c7edc35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b780cf4fb1016e183c8135e31b5953f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/870ebc2f7aabb028024894568d749934.png)
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3 . 已知函数 ![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cd66879c7d7c41c4119ac9571a90342.png)
(1)讨论
的单调性.
(2)证明:当
时, ![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0de742522bdf16fedb2765f379029a4.png)
(3)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cd66879c7d7c41c4119ac9571a90342.png)
(1)讨论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23fb90e09994fdc6ab02ed6ba664f31f.png)
(2)证明:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c472109d36ba3e37771845ac86f714a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0de742522bdf16fedb2765f379029a4.png)
(3)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d985495cdfb142edece75f11da70b3da.png)
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4 . 在满足
,
的实数对
中,使得
成立的正整数
的最大值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f0ebbc2bb3d8770fa0561206170afac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31d6bfca747c058b73394a3db1b070c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e9594feac3dff7cb06013363f1e774c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e740175e204eafccc93fb81f0b55b55d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
A.15 | B.16 | C.22 | D.23 |
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5 . 若存在使得
对任意
恒成立,则称
为函数
在
上的最大值点,记函数
在
上的所有最大值点所构成的集合为
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c6990382f3bd8be4ea77ea659377b1f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7e22ed576560576c840990c6f9827fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96d1bdf9d3955fad0976a54cb03b29df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
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解题方法
6 . 已知实数
,
,
.
(1)求
的值;
(2)若
对
恒成立,求a的最小值;
(3)当正整数
时,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/882b660047bb6ded500cedba57958e00.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04f146c48c81d7148fa0acbb24e9716e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f35023b165fd0e156dc2264859bec204.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b3ec7ada52f4850719a970aeb59ca16.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1415277a2abd787827778054bd134d75.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4088469fc818fd8b021460b4c90cccd9.png)
(3)当正整数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0704f453b2de48d36911f7db496bbf82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf343fa2731b063bc77ebed5b957c9ef.png)
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7 . 已知函数
.
(1)讨论
的单调性;
(2)若
恰好有两个零点
,
,且
恒成立,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e107063f2300c028d91537c0cf70832a.png)
(1)讨论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.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/dfab5631d1543bf2090b1c506698ee35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88ed3f472299563e31282a44aa9fe202.png)
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8 . 设
是坐标平面
上的一点,曲线
是函数
的图象.若过点
恰能作曲线
的
条切线
,则称
是函数
的“
度点”.
(1)判断点
与点
是否为函数
的1度点,不需要说明理由;
(2)已知
,
.证明:点
是
的0度点;
(3)求函数
的全体2度点构成的集合.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bcd8ee2d8367c167d6ae0abc741b6b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bcd8ee2d8367c167d6ae0abc741b6b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0963e06ca1a0aa7899759b13bab7db21.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(1)判断点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19b62194097ac66a5093c57fca2f5b4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/448c0a5ee776d19ce8e42ac9a5fd27c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12be206d66e65eb92ef08bad8cd8f71d.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2071086f9c57d5b02520606c56cf372.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/976581d4a974fe50f9f29d430c1289f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c955376eaa10efc765563bf426634df9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e43dac42d94c14cdb71b4f9a6e97a7e.png)
(3)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d0660d4864c16652a6b27337462b3f1.png)
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解题方法
9 . 已知函数
,
,则函数
的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca5306d21464bee4ea2aac79cbc43812.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bf039c46a25e331446c6ee1e9af3c82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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解题方法
10 . 已知函数
,其中
.
(1)判断函数
的单调性;
(2)若
,且当
时,
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd4fb684a57dce17245f4f03c23a626e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
(1)判断函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c532b5af7b88f1c21a7584cfac5fea6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86ea9bbcb6c1df9032b45e068d1bb5bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa5f4aadc17b6d5c9760a75fab7fb760.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bd82e6556171014f05d195a30dcd3ec.png)
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