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1 . 设函数
,
,(其中
),
(1)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7311de097cd65b1cf4202f2b1bea096.png)
________ ;
(2)若函数
与
的图象有3个交点,则实数
的取值范围为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7cd8ba6dd54511c9677fd5ee9c4dd8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c559199a5a1c85682990362ea2f10c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d33da711e50e96568facb18cef27165.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7311de097cd65b1cf4202f2b1bea096.png)
(2)若函数
![](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/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2023-11-23更新
|
248次组卷
|
3卷引用:山东省济南市历城第一中学2023-2024学年高一上学期11月期中数学试题
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解题方法
2 . 噪声污染已经成为影响人们身体健康和生活质量的严重问题.实践证明,声音强度
(分贝)由公式
(
,
为非零常数)给出,其中
为声音能量.当声音强度
,
,
满足
时,声音能量
,
,
满足的等量关系式为_________ ;当人们低声说话,声音能量为
时,声音强度为30分贝;当人们正常说话,声音能量为
时,声音强度为40分贝,当声音强度大于60分贝时属于噪音.火箭导弹发射时的噪音分贝数在
区间内,此时声音能量数值的范围是_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c5e29cd2d95618cdd5d70f91a4d74ba.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/d32a7e9e94f351289dde468fd7ed553c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6795cae2df43a722e1355e9562d93c09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c296e45b84cf67a98939aa7334e7d478.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de8ce8c07e34224e2d25130ed27c9a98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bec45f5be4df9e21991a49f2ae3b58a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f1ac49b4139636fb1809fe970b23a87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d1a0fd1ad044a9ecfcba672779bd678.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f904e5f274c559bdba741df035ed3461.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b28824365c3d4a6f7a4abcfadeb3ce8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21d51f5529add34502c47ae27438a46d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f514da91d1a9fda05c4e9f47c6df1bf4.png)
您最近一年使用:0次
2021-08-20更新
|
936次组卷
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4卷引用:江苏省南京市南师附中、秦淮科技高中2020-2021学年高一上学期联考数学试题
江苏省南京市南师附中、秦淮科技高中2020-2021学年高一上学期联考数学试题(已下线)专题06 与对数函数相关的情景化试题 - 2021-2022学年高一数学新教材情境化新题(人教A版2019必修第一册) 江苏省镇江中学2021-2022学年高一上学期教学质量检测数学试题江苏省苏州市工业园区星海实验高级中学2023-2024学年高一上学期期末复习数学试题
3 . 已知定义在
上函数
,已知定义在
上函数
满足
,设函数
与
图象交点为
,则
的值为_______ ;
的值为_______ (用
表示).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cb5d0579cea544fbacde282894ab282.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a1cfb60420ff7e72c1b9d64f69ae063.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f89abee401b0417cf034f10bcb1026e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eafbe64ec9acf78f3624abbd06d516e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d87cb8a215a9e889532768040fc37212.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dec02112039aad81123a9921317e3688.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
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