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高一数学 第 8 讲对数与对数函数 练习题与

  • 2026-11-02 17:03:36

高一数学 第 8 讲对数与对数函数 练习题与

昨晚备高一数学的“对数与对数函数”练习题，顺手把解析也捋了一遍。

题目不难，但学生最容易在定义域和底数上栽跟头。比如复合函数的单调性，得先看真数大于零，再套同增异减；还有那道恒过定点题，一眼盯住真数等于 1 就能秒解。

最逗的是第 3 题，题目印着求值，解析里却变成了解方程，硬生生多出一堆条件。这种小印刷失误，备课时得自己先绕回来。

整理完直接甩给搭班的年轻老师了，她今天刚好要讲这节。

要不要我帮你把这几道题里的对数运算易错点单独拎出来做个避坑清单？
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原文高一数学 第 8 讲对数与对数函数 练习题与解析
广东,39分钟前,
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