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1 . 帕德近似是法国数学家亨利.帕德发明的用有理多项式近似特定函数的方法.给定两个正整数m,n,函数
在
处的
阶帕德近似定义为:
,且满足:
,
,
,…,
.(注:
,
,
,
,…;
为
的导数)已知
在
处的
阶帕德近似为
.
(1)求实数a,b的值;
(2)比较
与
的大小;
(3)若
在
上存在极值,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb45f673c56a289ea78831c9237e8d20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db527571cfd256c515424c6f9d114284.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab984fa2801f780e08903b339c9d041f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d8ef6c18c8edf9f4c781376d5ce400a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa6b902edcff913a34589487e17c9fe6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c59886eb50089cc9bee3afa10282fdb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/089b65749e52fc6346eab9bb5c49e5b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f961273efaf91399f85f36202d5f5879.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6aa31a390d3e1dc7855bc3e09ec5867.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a66abbb081257b612880b4a5241b73a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c8fbc7623b9264d45a0ec4b440aef7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bd370c3b127fbdb77b6e5c40318328d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2db1e56c92e2ebdc5d2cae336a01b63.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e96546b3259afe4add331673fb835c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb45f673c56a289ea78831c9237e8d20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40765d09390381658d5b4dc0160366cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96d128f7851b7771f95bffbdbf3ced02.png)
(1)求实数a,b的值;
(2)比较
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/436a25a5007b4f98262f8e8311e6acfb.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a7d638c9a5bca41e7129446432e96cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/870ebc2f7aabb028024894568d749934.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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2 . 已知函数
在
处取得极值.
(1)求实数a的值;
(2)若关于x的方程
在区间
上恰有两个不同的实数根,求实数t的取值范围;
(3)证明:对任意的正整数n,不等式
都成立.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31ccd0083aafaa8d0dd3c48edd41b4ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb45f673c56a289ea78831c9237e8d20.png)
(1)求实数a的值;
(2)若关于x的方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c25b2669c1130c028447eeabc39b55d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb87c830a03204a5b783ad4c2ba49c4e.png)
(3)证明:对任意的正整数n,不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba6c7ec8f6c6127448a724e16b096ea5.png)
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3 . 已知函数
.
(1)当
时,讨论
的单调性;
(2)令
,若
有两个不相等的实数根
.
(i)求a的取值范围;
(ii)求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23c59ee61e811f2cbb69edcd7445e8d5.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)令
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5466c28592d45ca35059382b351d583f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9587df831df1af5e7dd6be5fdc7bd8ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
(i)求a的取值范围;
(ii)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef0fd6297d9af0dbfaccd08a53054ec5.png)
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4 . 已知函数
.
(1)讨论函数的单调性;
(2)若
有两个不同的零点
,不等式
恒成立,求实数m的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/254c07941a6929e0afa818a7a2176657.png)
(1)讨论函数的单调性;
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2217a4ab9fc9692c87c43ed4f02a240a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec97fb7fc62f40059a13e7e69ac40e59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b8be675c8d80f2d734b32f929ec1493.png)
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5 . 已知平面上两定点
、
,则所有满足
(
且
)的点
的轨迹是一个圆心在
上,半径为
的圆.这个轨迹最先由古希腊数学家阿波罗尼斯发现,故称作阿氏圆.已知棱长为3的正方体
表面上动点
满足
,则点
的轨迹长度为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c411fff1dd83ca4c5afca219f4bb541.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3be362dec96173f246ff747264007817.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/472393b18c7880e73b40e31fbe2d951c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e80af1b0496f63751f07e945c062ecc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ab34ce6cee0673ab0d37b660d57bc07.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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解题方法
6 . 已知函数
有两个不同的极值点
,且不等式
恒成立,则实数t的范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f821ff0a8561d8ca7dd8fbf40ddaa67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3c785f0c80cd698b3e97a9f020d4ac0.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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7 . 已知函数
.
(1)若
,试判断
的单调性,并证明你的结论;
(2)若
恒成立.
①求
的取值范围:
②设
,
表示不超过
的最大整数.求
.(参考数据:
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf7097cfdb660880508c976c4ac9fdbf.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d58b0c51f8c4d876af791576ed6ffcd.png)
①求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
②设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea98bde5af87727ddf5e63715708986f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c4f5908d6a1217e493ed7586b6964dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a0b88c37278b5dddd555b3442f0519.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9405361d7be3c9e4d462a4e955d8fe3c.png)
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解题方法
8 . 关于
的不等式
的解集中有且仅有两个大于2的整数,则实数a的取值范围为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3767a6c0d225947f6e6db4d2c633b1fa.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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9 . 1.已知函数
.
(1)若
是
的极值点,求t的值,并讨论
的单调性;
(2)证明:当
时,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbf9f2c15bfa6cf93af6bbeee20e22b7.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)证明:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07d212226826bb1d283046f73311a128.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79d5a0e25aebe1cc182d2247ed344652.png)
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10 . 已知函数
.
(1)若曲线
在
处的切线与
轴垂直,求
的单调区间;
(2)若对任意
,不等式
恒成立,求
的取值集合.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3bf00beccd8640e004525d7adc49158.png)
(1)若曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09b29a7faa14a6e09d0db2d04f4ced03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
(2)若对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c704f933ba573c1ca97a7049e6f9ab48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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