Texas Instruments TI-84 - Manual (Page 641)

Appendix B: Reference Information 638
Amortization Amortization Amortization Amortization
If computing bal (), pmt2 = npmt
Let bal (0) = RND ( PV )
Iterate from m = 1 to pmt2
then:
Balance, principal, and interest are dependent on the values of PMT , PV ,
æ, and
pmt 1 and
pmt 2.
where: RND = round the display to the number of decimal
places selected
RND12 = round to 12 decimal places
I
m
RND RND12 –i bal m 1 –
( ) × ( ) [ ]
=
bal m
( )
bal m 1 –
( ) I
m
– RND PMT
( )
+ = ⎩
⎨
⎧
bal( ) bal pmt2
( )
=
ΣPrn( )
bal pmt2
( ) bal pmt1 ( )
– =
ΣInt( )
pmt2 pmt1 – 1 +
( ) RND PMT ( ) × ΣPrn( )
– =