求证 log(a)^(b)=1/log(b)^(a)求证 log(a)^(b)=1/log(b)^(a)

问题描述:

求证 log(a)^(b)=1/log(b)^(a)
求证 log(a)^(b)=1/log(b)^(a)

换底公式:loga b = logb b /log b a = 1 /log b a