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E-48
A Selecting Interest Calculation for a Period
with a Partial Month
•You can select compound interest or simple interest to
calculate interest for a period with a partial month. Before
performing each type of calculation, first use Configuring
Settings (page E-16) to select either compound interest
or simple interest for the dn setting.
A CMPD Mode Financial Calculation
Variables (VARS)
•Variables n, I, PV, PMT, FV, P/Y, and C/Y are used in
the CMPD Mode.
• The values of CMPD Mode variables are retained even if
you change to another mode. Note, however, that CMPD
Mode variables are also used by other modes, so
performing an input or calculation operation may change
the values assigned to them.
• Though CMPD Mode variables are financial calculation
variables, they are also used by arithmetic and function
operations in the COMP Mode.
A Calculation Formulas
uu
uu
u PV, PMT, FV, n
I
% G 0
PV =
–α × PMT – × FV
β
γ
PMT =
– × PV – × F
V
β
α
γ
FV =
– × PV –
× PMT
β
γ
α
n =
log
(1+ iS) × PMT – FV × i
(1+ iS) × PMT – PV × i
{}
log (1+ i)