Error Conditions Relating To Specific Tasks; Financial - Sharp EL-9900 Operation Manual

5. Error Conditions Relating to Specific Tasks

1. Financial

* Define constants "r" and "s" as used in the equation below.
I (%)
(
÷
r = C/Y
100
1. I% calculation
1 If PMT = 0
-
( )
PV
-
r =
FV
2 If PMT ≠ 0
+
f (r) = PV
+
f (r) = PV
calculate the following for r solved in 1 and 2
I (%) = 100
2. PV calculation
1 If r ≠ 0, r >
-
1
- +
PV = (1
2 If r = 0
×
-
PV = n PMT
3 If r ≤
-
1
Error
C/Y
{
S = 1 (Pmt_Begin)
)
P/Y
+ –
1 1 ,
S = 0 (Pmt_End)
1
n
–
1
× × ×
+
(1 r s) PMT
×
+
PMT n FV: (r = 0)
P/Y
× ×
+
C/Y ((r 1)
C/Y
-
– + n
1 (1 r)
× ×
r s)
r
–
FV
}
- n
– +
1 (1 r)
+
FV (1
r
–
1)
× ×
– +
PMT FV (1
: (r ≠ 0)
-
+
r) n
-
n
r)
Appendix
237