Sharp EL-9900 - Page 248

238
Appendix
3. FV calculation
1 If r ≠ 0, r > -1
1 – (1 + r)
- n
r
PV + (1 + r × s) × × PMT
(1
+ r)
- n
FV = –
2 If r = 0
FV = -n × PMT – PV
3 If r ≤ -1
Error
4. PMT calculation
1 If r ≠ 0, r >
-1
1 – (1 + r)
- n
r
PMT = –
(1 + r × s) ×
PV
+ FV × (1 + r)
- n
2 If r = 0
PMT = –
PV + FV
n
3 If r ≤ -1
Error
5. N calculation
1 If r ≠ 0, r >
-1
log (1 + r)
log
N = –
1
r
× (1 + r × s) × PMT – FV
1
r
× (1 + r × s) × PMTPV +
{}
2 If r = 0
N = –
FV + PV
PMT
3 If r ≤ -1
Error