已知
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/230a415c9ce211741766deef4608ebb7.png)
________ .(用
表示)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6a7dbc3f8529f74a0e2efb97f838d6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/230a415c9ce211741766deef4608ebb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/280860dd039e1305a5ccc455f63e8223.png)
更新时间:2023-12-27 10:57:04
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解题方法
【推荐1】设奇函数
的定义域为R,且对任意实数x都满足
,若当
时,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a6955a7b0ec72cb63a83524e9ddbd8a.png)
___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c25fb0c3e1b6ef211233170b9aa9001.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04614d0fac9cde995374a43d4323b723.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01e47d77aa8a3cff15aaa7e1e893c761.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a6955a7b0ec72cb63a83524e9ddbd8a.png)
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【推荐2】已知
,则
的最小值是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/255c6a83334bb86766a7d99d84a9883d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac42025e439a68768819900999631ed3.png)
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名校
【推荐2】牛顿冷却定律描述一个物体在常温环境下的温度变化:如果物体初始温度为
,则经过一定时间
(单位:分钟)后的温度
满足
,其中
是环境温度,
为常数,现有一杯
的热水用来泡茶,研究表明,此茶的最佳饮用口感会出现在
.经测量室温为
,茶水降至
大约用时一分钟,那么为了获得最佳饮用口感,从泡茶开始大约需要等待__________ 分钟.
(参考数据:
.)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/635ccd929471d564cc9d2d96266b34d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fb61026150c337abe58a4d6f62b32d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/212baa7c3eed6574b6edae95538a7765.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3eabd5f3a86afe49dcd70571e2b96cfd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e846d9a95f5d9b356478882da78625e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ecafb66dca8b751f9e51bbc43160f84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b1ea1c0b768f231430b1ae0836a4e66.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/849ca1e01ff86bdd86ddd4693da05100.png)
(参考数据:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e210b9c6d7eee8142ead1ff1a57680e.png)
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