TI BA-35 Solar Quick Reference Manual page 20

Annuity Calculations
Recalling Values
To recall a value that you have entered or
computed, press s and the appropriate key
for the value you want to recall. For example, to
recall the present value, press s K.
Positive or Negative Payments
In annuity problems, the present value and
future value are usually positive numbers. The
payment amount may be positive or negative,
depending on the type of problem you are
solving.
§ If payments are discounted backward, the
payment amount is positive. This is the case
in mortgage, loan, bond, and lease
problems.
These problems have a present value, but
they may or may not have a future value. (If
there is no future value, FV=0.)
§ If payments are compounded forward, the
payment amount is negative. This is the
case in savings problems.
These problems have a future value, but
they may or may not have a present value.
(If there is no present value, PV=0.)
(Continued)
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