HP HP12C hp 12c_user's guide_English_E_HDPMBF12E44.pdf - Page 185

Formulas Used

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Appendix D Formulas Used Percentage % = Base(y) × Rate(x) 100 ∆% = 100⎜⎜⎝⎛ NewAmount(x ) Base(y − ) Base(y ) ⎟⎟⎠⎞ %T = 100⎜⎜⎝⎛ Amount(x ) Total(y ) ⎟⎟⎠⎞ Interest n i PV FV PMT S I INTG (n) FRAC (n) = number of compounding periods. = periodic interest rate, expressed as a decimal. = present value. = future value or balance. = periodic payment. = payment mode factor (0 or 1) indicating treatment of PMT. 0 corresponds to End, 1 to Begin. = interest amount. = integer portion of n. = fractional portion of n. Simple Interest I360 = n 360 × PV ×i I365 = n 365 × PV ×i 185 File name: hp 12c_user's guide_English_HDPMBF12E44 Printered Date: 2005/7/29 Page: 185 of 209 Dimension: 14.8 cm x 21 cm

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185
File name: hp 12c_user's guide_English_HDPMBF12E44
Page: 185 of 209
Printered Date: 2005/7/29
Dimension: 14.8 cm x 21 cm
Appendix D
Formulas Used
Percentage
100
)
Rate(
)
Base(
%
x
y
×
=
⎟
⎟
⎠
⎞
⎜
⎜
⎝
⎛
−
=
∆
)
Base(
)
Base(
)
NewAmount(
100
%
y
y
x
⎟
⎟
⎠
⎞
⎜
⎜
⎝
⎛
=
)
Total(
)
Amount(
100
%T
y
x
Interest
n
= number of compounding periods.
i
= periodic interest rate, expressed as a decimal.
PV
= present value.
FV
= future value or balance.
PMT
= periodic payment.
S
= payment mode factor (0 or 1) indicating treatment of
PMT
.
0 corresponds to End, 1 to Begin.
I
= interest amount.
INTG
(n)
= integer portion of
n
.
FRAC
(n)
= fractional portion of
n
.
Simple Interest
i
PV
n
I
×
×
=
360
360
i
PV
n
I
×
×
=
365
365