Processing math: 100%

Rule of 72

(1+k%)x=2

x=log1+k%2=ln2ln(1+k%)

using L'Hospital's Rule:

limxcf(x)g(x)=limxcf(x)g(x)

so, limx0xln1+x=limx0111+x=limx01+x=1

so, ln2ln(1+k%)ln2k%=100×ln2k69.3k

Author: sanye

Exported At 2021-02-24 Wed 23:51. Created by Emacs 26.1 (Org mode 9.4)