1 . (1)(2)(3)分别是函数
和
在不同范围的图象,借助计算工具估算出使
的
的取值范围(精确到0.01).
(1)
(2)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36cf7675fc49cbdf3611ac547d85c8f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d1414cca0cf4b0b709414ee707e73b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/736818546e081e85ab5fb79a35ddf7e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(1)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/22/8f40ac99-66ad-4a1c-88bd-b9c9b739ea5f.png?resizew=169)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/22/6ebe8e43-e209-461e-a643-627d2414f1f3.png?resizew=189)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/22/1974ad8f-46d2-4c5e-bf15-7675d54ce14b.png?resizew=182)
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2020-02-07更新
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4卷引用:人教A版(2019) 必修第一册 逆袭之路 第四章 4.4 对数函数