248 B: More About Calculations
File name : English-M02-1-040308(Print).doc Print data : 2004/3/9
INT’
=
BAL
x
i
(
INT’
is rounded to the current display setting;
INT’
=
0 for period 0 in Begin mode)
INT
=
INT’
(with sign of
PMT
)
PRIN
=
PMT
+
INT’
PRIN
=
PMT
+
INT’
BAL
new
=
BAL
old
+
PRIN
∑
INT
new
=
∑
INT
old
+
INT
∑
PRIN
new
=
∑
PRIN
old
+
PRIN
Interest Rate Conversions
Periodic compounding
%
% 1
1 100
100
P
NOM
EFF
P
+
−
×
×
=
Continuous compounding
%
100
%
1 100
NOM
EFF
e
−
×
=
Cash-Flow Calculations
j
=
the group number of the cash flow.
CF
j
=
amount of the cash flow for group
j
.
n
j
=
#
TIMES
the cash flow occurs for group
j
.
k
=
the group number of the last group of cash flows.
0
1
total number of cash flows prior to group j
(
x ( % : )
( % :
))
j
l
l
k
j
j
j
j
N
n
NPV
CF
CF
USPV i
n x SPPV i
N
≤
=
+
∑
∑
1
<j
=
=
=
When
NPV
= 0, the solution for
i
% is
IRR%
.