Appendix B: Reference Information 636
The iteration used to compute i:
where: iƒ0
where: x=i
y=P/Y ÷ C/Y
where: k=0 for end-of-period payments
k=1 for beginning-of-period payments
0PV PMT Gi11i+()
N–
–i
------------------------------ FV 1i+()
N–
×+×+=
I%100CY e
yx1+()ln×()
1–[]×⁄×=
Gi1ik×+=
N
PMT GiFV i×–×
PMT GiPV i×+×
----------------------------------------------
⎝⎠
⎛⎞
ln
1i+()ln
----------------------------------------------------------=
N–PV FV+()PMT÷=