已知
,
(n为正整数,
).
(1)当
时,设函数
,
,证明:
有且仅有1个零点;
(2)当
时,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a92846c2ff8f039757b28185ca9de82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e056cb94c7a8191c650f496449e2d06e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2725a89d93c791f7a0098f4964587905.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c87b351f16728b0023fd63678f8103c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac18de43cd0b49f3f34709edd8d3d0de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/139351984d0edc6c9b4fca72b6df8606.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad1dd158811a1ecc73bb3c32fa0fc1bb.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc2d3df37e73a8abea815f37dbb3fff5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c3ff97f6e73d36305026ea3b398ad2c.png)
21-22高三下·江苏常州·阶段练习 查看更多[5]
江苏省华罗庚中学等三校2021-2022学年高三下学期4月联合调研数学试题山东省济南市历城第二中学2022-2023学年高三第二次摸底考试数学试题(已下线)专题突破卷10 导数与不等式证明(已下线)重难点突破09 函数零点问题的综合应用(八大题型)安徽省池州市第一中学2024届高三上学期“七省联考” 数学模拟练习(2)
更新时间:2022-04-26 18:49:44
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【推荐1】已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e38bde4d29c7f24d195a9b809662ab7.png)
(1)若
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(1)若
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(2)当
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较难
(0.4)
解题方法
【推荐2】已知函数
.
(1)若
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f0e5295bd91b669b4b4147740add0e0.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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(2)当
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解题方法
【推荐1】已知函数
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cc1b193aa193153eb402df8560778e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc09341e96b6adcd1773bd7bf6a65230.png)
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(2)若存在
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【推荐2】已知函数
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(2)若
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