User Guide

248 B: More About Calculations
File name : 17BII-Plus-Manual-E-PRINT-030709 Print data : 2003/7/11
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
jj j
j
Nn
NPV CF CF USPV i n x SPPV i N
≤
=
+
∑
∑
1 ＜j
=
＝
＝
When NPV = 0, the solution for i% is IRR%.