对数函数是高中数学的基础性知识,虽然对数函数和指数函数有很多的相似点,但是从数学知识而言,对数函数对学生的数学与学习能力提出了更高的要求。因此,可以对比研究指数函数的方法来学习本节课内容,有利于学生对新知的理解,还能加深对之前所学内容的记忆。对数函数所涉及的知识更丰富、采取的方法更灵活,能力要求 Logarithmic function is the basic knowledge of high school mathematics. Although there are many similarities between logarithmic function and exponential function, the logarithmic function poses higher requirements on students’ mathematics and learning abilities. Therefore, we can compare the method of exponential function to learn the content of this lesson, which is beneficial to students’ understanding of new knowledge and deepen the memory of what they learned. The logarithmic function involves a wealth of knowledge, a more flexible approach, and a competency-based approach