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)
×
PMT
PV
+
{
}
2
If r = 0
N =
–
FV
+
PV
PMT
3
If r
≤
-
1
Error