Sharp EL-9900 User Manual
239
Appendix
Calculation result
→Xreg
Calculation result
→Xreg
µ: Mean
σ: Standard
σ: Standard
deviation
However:
Γ(s) = ∫
∞
0
0
x
s
–
1
e
-
x
dx
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
+
r
×
s)
×
PMT, in N calculations.
s = 1 (Pmt_Begin)
s = 0 (Pmt_End)
In I% calculations
If PMT > 0:
Pmt_End mode:
PV
≥ 0 and FV
+
PMT
≥ 0
PV < 0 and FV
+
PMT < 0
Pmt_Begin mode:
PV
+
PMT
≥ 0 and FV ≥ 0
PV
+
PMT < 0 and FV < 0
If PMT < 0:
Pmt_End mode:
PV > 0 and FV
+
PMT > 0
PV
≤ 0 and FV
+
PMT
≤ 0
Pmt_Begin mode:
PV
+
PMT > 0 and FV > 0
PV
+
PMT
≤ 0 and FV ≤ 0
If PMT = 0: PV
÷
FV
≥ 0
• FV, N
×
PMT, PV
≥ 0 or FV, N
×
PMT, PV
≤ 0
• Irr calculation: all cash flows have the same sign.
3. Distribution function
1 pdfnorm(
1
f (x) =
exp (
–
)
(x
–
µ)
2
2
σ
2
2
π σ
2 pdfT(
f (x) =
πdf
df
2
x
2
df
df
+
1
2
df
+
1
2
-
Γ ( )
Γ ( ) (1
+
)