2023高三·全国·专题练习
解题方法
1 . 对于函数
,若存在
,使得
成立,则称
为
的不动点.已知二次函数
,满足
,且
有两个不动点
,记函数
的对称轴为
,求证:如果
,那么
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f07ad90ca228230b03f12eb48ee0c1d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73bc955d158efde0bdd62d14a60a65e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8ee0bd8a541d6c1057325f7f4287a64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f54ab7aa1626be6d6f53e26148e1e27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11abb76da45ffa52b47c3a6b9a03ac7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8145f597cf3de8a6581953dab5f1d558.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e7891769c0298d101a282eb8f6bc81c.png)
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2022高三·全国·专题练习
解题方法
2 . 已知函数
.
(1)
(1)
成立,求
的取值范围;
(2)若
在区间
上有两个零点,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c92294103b1317ca530f5eb075f668d7.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f23a6ce9eed9d3d6a6967572baa68d3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f022d5937428ab378be468ceca636220.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01e6b685cee0668f1f2400324a81ee62.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d479a86a1711709b2d100fe4daf3e7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fef9380b394a4bd829c83a5a5b4c859.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3f5c08e8b47798c6454665ef6d5aa39.png)
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2022高三·全国·专题练习
3 . 设不等式组
表示的平面区域为
,设
内整数坐标点的个数为
.设
, 当
时,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf7014de5cbe63dca175543775c19814.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66d4e8502106802f1485c3b0f28f2664.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66d4e8502106802f1485c3b0f28f2664.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ab5587f937dcd892b7cc0b69065b126.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0704f453b2de48d36911f7db496bbf82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65d52ce074304be72992e6695a44f71c.png)
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名校
4 . 已知在平面直角坐标系中,
,
(
),其中数列
、
都是递增数列.
(1)若
,
,判断直线
与
是否平行;
(2)若数列
、
都是正项等差数列,它们的公差分别为
、
,设四边形
的面积为
(
),求证:
也是等差数列;
(3)若
,
(
),
,记直线
的斜率为
,数列
前8项依次递减,求满足条件的数列
的个数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a42fdaa4763fc6834ed12d4f780c74c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5010b2e9175fdc6fbf5bf88541421d27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f093c61867ee4ce75f951d46b9b123.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fce83115a50f99e08e9a2db7267aeed.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ff1c33b81ac2f065d37faef37504bb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81496535a302e25c366e3ffa46e0c54b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11ddc92d84d188c66b435664a7e7b5a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc34876d748f30fa4fc2eb6a686b5ff5.png)
(2)若数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fce83115a50f99e08e9a2db7267aeed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5edf900c810371fb21297c15f86d8743.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b31ac1def558351e2e3ed1235c570530.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0f2a8097208d996bf69f9b0795b0e56.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f093c61867ee4ce75f951d46b9b123.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cce224c28ca451c4f105dc3b077736cb.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e4b5779873cb3f4366dbfdb983dec81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7f8d1dcfab8e4079c100653603acf75.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b741df7d2e8cd077989e4e5401c7d1b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef3241705cd0b7fae09b96df8b3e9af6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/374cb268ffa23fc0bf12c6e6dc873c4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bbbf4d763f3cbe5a71707bc19c78191.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b311784db139326c27b72a3d55e29c31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fce83115a50f99e08e9a2db7267aeed.png)
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