HP 12c Platinum Owner's Handbook

Appendix : Formulas Used 187
NPV =
Internal Rate of Return
0 =
Calendar
Actual Day Basis
∆DYS = f(DT
2
) – f(DT
1
)
where
f(DT) = 365 (yyyy) + 31 (mm – 1) + dd + INTG (z/4) – x
and
for mm ≤ 2
x = 0
z = (yyyy) – 1
for mm > 2
x = INTG (0.4mm + 2.3)
z = (yyyy)
INTG = Integer portion.
30/360 Day Basis
DAYS = f(DT
2
) – f(DT
1
)
f(DT) = 360 (yyyy) + 30mm + z
CF
j
= cash flow at period j.
n = number of cash flows
CF
j
= cash flow at period j.
IRR = Internal Rate of Return
CF
0
CF
1
1 i+()
1
------------------
CF
2
1 i+()
2
------------------ …
CF
n
1 i+()
n
------------------++++
CF
j
j
1=
k
∑
11IRR+()
n
j
–
–
IRR
---------------------------------------1IRR+()
nq
qj<
∑
–
⋅⋅ CF
0
+

HP 12c Platinum Specifications

General

Digits	10 digits
Battery type	CR2032
Type	Financial
Form factor	Pocket

Weight and Dimensions

Weight	110 g
Dimensions (WxDxH)	79 x 129 x 15 mm