对数换底公式是对数运算的重要依据,应用十分广泛,但在高一代数的教材中把它放在了习题中,尽管是黑体字,但同学们对它的认识仍然不足,应用不得力,因而对它的研究无疑是非常必要的. The logarithmic base formula is an important basis for logarithmic operations. It is widely used, but it is placed in exercises in higher-generation textbooks. Although it is in bold type, students still lack understanding of it and applications are not allowed. Force, therefore its research is undoubtedly very necessary.