Error Conditions During Financial Calculations; Distribution Function - Sharp EL-9900 Operation Manual

2. Error conditions during financial calculations

• r ≤
-
1
• N = 0 in PMT calculations
• I% = 0 and PMT = 0, or I% ≠ 0 and FV = (1/r) (1
s = 1 (Pmt_Begin)
s = 0 (Pmt_End)
In I% calculations
If PMT > 0:
Pmt_End mode:
Pmt_Begin mode:
If PMT < 0:
Pmt_End mode:
Pmt_Begin mode:
If PMT = 0: PV
×
PMT, PV ≥ 0 or FV, N
• FV, N
• Irr calculation: all cash flows have the same sign.

3. Distribution function

1 pdfnorm(
1
f (x) =
2π σ
2 pdfT(
df
Γ (
2
f (x) =
df
Γ (
2
PV ≥ 0 and FV
PV < 0 and FV
PMT ≥ 0 and FV ≥ 0
+
PV
+
PV PMT < 0 and FV < 0
PV > 0 and FV
PV ≤ 0 and FV
+
PV PMT > 0 and FV > 0
PMT ≤ 0 and FV ≤ 0
+
PV
FV ≥ 0
÷
×
PMT, PV ≤ 0
µ)
2
–
(x
–
exp ( )
2
2σ
+
df 1
+
1 2
-
x
+
) (1 )
2
df
πdf
)
× ×
+
r s) PMT, in N calculations.
PMT ≥ 0
+
+
PMT < 0
+
PMT > 0
PMT ≤ 0
+
Calculation result→Xreg
However: Γ(s) = ∫
Calculation result→Xreg
Appendix
µ: Mean
σ: Standard
deviation
∞
– -
s 1 e x
x dx
0
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