简简单单~

davidbin，why (c+e+g)/4=?R3?

davidbin

简简单单~ 发表于 23-3-2012 21:17
davidbin，why (c+e+g)/4=?R3?

S = 45/4+ (C+E+G)/4
S is a integer. 45/4 余 1，所以（C+E+G)/4 必余 3, R1+R3 = R4 = R0
for example :
5/4 = 1R1   7/4=1R3   (5+7)/4 = 3 is a integer