17-20 Applications
8317APPS.DOC TI-83 international English Bob Fedorisko Revised: 02/19/01 1:00 PM Printed: 02/19/01 1:39 PM
Page 20 of 20
8. Press
†
to move the cursor onto the function for
interest defined by
X
2T
and
Y
2T
. Enter
240
.
The graph shows that for the 240th payment (
X=240
),
441.97 of the 800 payment is interest (
Y=441.97
).
9. Press
y
[
QUIT
]
y
[
FINANCE
]
9
to paste
9:bal(
to the
home screen. Check the figures from the graph.
At which monthly payment will the principal allocation
surpass the interest allocation?