换底公式
change of base formula $\log_a b = \frac{\log_c b}{\log_c a}$, where $c$ is any positive number not equal to 1.
CSCA 数学 考试术语
change of base formula $\log_a b = \frac{\log_c b}{\log_c a}$, where $c$ is any positive number not equal to 1.
CSCA 数学 考试术语