名校
解题方法
1 . 已知
定义域为R的函数,若对任意
R,
S,均有
,则称
是S关联.
(1)判断和证明函数
是否是
关联?是否是
关联?
(2)若
是{3}关联,当
时,
,解不等式:
;
(3)证明:“
是{1}关联,且
是{3}关联”的充要条件为“
是
关联”.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/244af58c69c119a21c512a8ea77e4dac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/244af58c69c119a21c512a8ea77e4dac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13f29de8e84b8345b081efc0135a3ecc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(1)判断和证明函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c07bd1bced5e02c11b99392f9526f7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe86cace140f2c3588ab115837bbfc9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/304226ca50149b49702928e44d565964.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d20e12120d98fe025662a8a74bbd6ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a66062dbd4978a7bb2fb9b9aabb898af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19a665927b0f2906d2bb3e5611a06d69.png)
(3)证明:“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9210e75c35fb455d0446eb7ddba7d79c.png)
您最近一年使用:0次
名校
解题方法
2 . 令
.
(1)若
,
,试写出
的解析式并求
的最小值;
(2)已知
是严格增函数,
是周期函数,
是严格减函数,
,求证:
是严格增函数的充要条件:对任意的
,
,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f389d2b2ea67586fa18c9362e6621b9.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1723a3672a6d29807750ac7803ec379.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13ddac37d332169a34598a63b4634b46.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcafc95a0527841c29a58d4f7d85e232.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcafc95a0527841c29a58d4f7d85e232.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a813b5adbf5c7082561237894ba6d599.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24a57996290794e082b21d8f1dfc322a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef80b434078bf063f1f4c958be301871.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24a57996290794e082b21d8f1dfc322a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/447d6f62c09c1d05346fd16a24159f6e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b90551ed750a9e91f39d9b5079d9fef.png)
您最近一年使用:0次
名校
解题方法
3 . 已知数列
满足:①
(
);②当
(
)时,
;当
(
)时,
.记数列
的前
项和为
.
(1)求满足条件的所有
,
,
的值;
(2)若
,求
的最小值;
(3)求证:
的充要条件是
(
).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6978c2051e0a7305d2add555ff4646b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e97769855336d73371930df1f187875e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05e95aa486211d7f810a5eec609a4f69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b08c58baacec3cd0c0a06e267fa9ec5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f7428a907e1e376d64b44d693f2955f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f496f5660b342973930563ccc1e72755.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b08c58baacec3cd0c0a06e267fa9ec5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1a5945ce5c2114af8c18718ca8dc899.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
(1)求满足条件的所有
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c1ccc6c74b8754e9bcbb3f39a11b6f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc858b7a95c5006a44067022da09f667.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a6210ceedb78e4e5974d06b78d23a79.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
(3)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d0f924858fdfc9403142fcbce46de32.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7f7b4c93ca2429e16ab37678fa28c27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e97769855336d73371930df1f187875e.png)
您最近一年使用:0次