Texas Instruments TI-89 Titanium User Manual page 753

Finding the Future Value of an Annuity
Find the future value of an annuity using the values from the previous example where
the interest rate is 14%.
Enter the equation to solve for
solve(s=p (1+i)^n,s) | i=.14
†
n=6
Result: The future value at 14% interest is
2,194.97.
Computing the Time-Value-of-Money
This activity creates a function that can be used to find the cost of financing an item.
Detailed information about the steps used in this example can be found in Programming.
Time-Value-of- Money Function
In the Program Editor, define the following Time-Value-of-Money (
= number of payments,
temp1
= monthly payment,
temp4
Activities
.
s
and and
p=1000
= annual interest rate,
temp2
= future value, and
temp5
) function where
tvm
= present value,
temp3
= begin- or end-of-payment
temp6
750