something about the function ACCRINT()

["chengj" <chenj dragontec com cn>]

 

when i use the function ACCRINT() in MS EXCEL,I meet a problem.

ACCRINT("39507","39691","39569",0.1,1000,2,2)=17.222222222

BUT:

ACCRINT("39507","39691","39569",0.1,1000,4,2)=16.666666667

39507---"2008-2-29"

39691---"2008-8-31"

39569---"2008-5-1"

As you see, when "Frequency"=4 the result is smaller.

who can tell me why?

 

Thank you very much!