解题方法
1 . 已知
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25d8ad5b64dda4b4334f859b100f2bbc.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1823f96ad283f9238d2f9845cd064a79.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25d8ad5b64dda4b4334f859b100f2bbc.png)
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2 . 咖啡适度饮用可以提神醒脑、消除疲劳,让人精神振奋.冲咖啡对水温也有一定的要求,把物体放在空气中冷却,如果物体原来的温度是
,空气的温度是
,经过
分钟后物体的温度为
满足
.研究表明,咖啡的最佳饮用口感会出现在
.现有一杯
的热水用来冲咖啡,经测量室温为
,那么为了获得最佳饮用口感,从冲咖啡开始大约需要等待____________ 分钟.(结果保留整数)(参考数据:
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cbc80c01de7c234401433fe858b7a6b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ea1a11e6cc8591f7fd3e8f9092e47ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54ab69d1bafe03c2e9b4d4d51285a1dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b03fa46d3b3031ad74474fcb53690fcc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/722437f6ee8f96d6e3643ba169aa0c3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b4cae08e3a3636df2b71f8644635d33.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c7889f265b1bac6f19624eb93f5dbdc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c90abbffd8c21f27d9ef443fbc9ba664.png)
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2023-11-22更新
|
478次组卷
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2卷引用:江苏省淮安、南通部分学校2023-2024学年高三上学期11月期中监测数学试题
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3 . 计算:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ea857309080a2ca97596ec6bb3b8f0d.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ea857309080a2ca97596ec6bb3b8f0d.png)
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解题方法
4 . 若
有意义,则实数
的取值范围是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69da637cf85e2cafa49b4a90eecc7eae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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2023-11-19更新
|
770次组卷
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2卷引用:江苏省常州市第一中学2023-2024学年高一上学期期中考试数学试卷
名校
5 . 若
,且
,则实数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/875ab313e781858a736e545409ae397a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5886dd7aa4d4b9b03920cf6b96c9a34.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
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2023-11-14更新
|
1078次组卷
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5卷引用:第4章:指数与对数章末综合检测卷-【题型分类归纳】(苏教版2019必修第一册)
(已下线)第4章:指数与对数章末综合检测卷-【题型分类归纳】(苏教版2019必修第一册)河南省部分重点中学2023-2024学年高一上学期11月联考数学试题(已下线)【第二课】4.3.1对数的概念+4.3.2对数的运算【第二课】上好三课,做好三套题,高中数学素养晋级之路辽宁省朝阳市建平县实验中学2023-2024学年高一上学期12月月考数学试题(已下线)专题06 对数函数1-期末复习重难培优与单元检测(人教A版2019)
6 . 已知正数x,y满足
,
,则
的值为____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7b763c4724c13f6ff9f84d958183d17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/826858fddce9ac8b521c27514e2513d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9c2cb31b2a8b85ad6102a639002844e.png)
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7 . 若实数
,
,满足
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4753f4a4456d0df13843b71015bfa14.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4375b67cd07b3cdd798459d01f3b415.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1093a2cb07f7d464afbefba091f5e68c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4753f4a4456d0df13843b71015bfa14.png)
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8 . 设
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e84234edf14ccd55243f0b8ce438b55.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/359141feec6054f2f9ac492cd65ba1b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e84234edf14ccd55243f0b8ce438b55.png)
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2023-10-15更新
|
1257次组卷
|
3卷引用:江苏省扬州市邗江区2023-2024学年高一上学期期中数学试题
23-24高一上·江苏南通·阶段练习
9 . 若
,且
,则实数
的值为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ab73385b9d1636b4f41a730e7063ca2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5886dd7aa4d4b9b03920cf6b96c9a34.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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10 . 牛顿曾经提出了常温环境下的温度冷却模型:
,其中
为时间(单位:
为环境温度,
为物体初始温度,
为冷却后温度.假设在室内温度为
的情况下,一杯饮料由
降低到
需要
,则此饮料从
降低到
需要___________ min .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ba8e836bc1ff5514ab22af799f660ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1430c28e069e1ce72cb3543de38623a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25f64fa38725c136504f723019a18dc5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f2969d81e7c1cc013e2bc059ac498f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6cca692e47077db0c89675b1beb4847.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca9835a4c1cbdb1311f0cd02710210b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10f464f339e899f2045f56c699fb5908.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca9835a4c1cbdb1311f0cd02710210b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f988ef8f87925047d752423e34b8e31.png)
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