log函数公式有派槐神:
log(a)(MN)=log(a)(M)+log(a)(N);尘亏
log(a)(M/N)=log(a)(M)-log(a)(N);
log(a)(M^n)=nlog(a)(M);
log(a^n)(M)=1/nlog(a)(M);
a^log(a)N=N等。
扩展资料
推导公式明扰
log(1/a)(1/b)=log(a^-1)(b^-1)=-1logab/-1=loga(b)
loga(b)*logb(a)=1
loge(x)=ln(x)
lg(x)=log10(x)