Texas Instruments TI-89 Titanium User Manual

Activities 750
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%.
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 (
tvm) function where
temp1 = number of payments, temp2 = annual interest rate, temp3 = present value,
temp4 = monthly payment, temp5 = future value, and temp6 = begin- or end-of-payment
Enter the equation to solve for
s.
solve(s=p†(1+i)^n,s) | i=.14 and p=1000 and
n=6
Result: The future value at 14% interest is
2,194.97.

Texas Instruments TI-89 Titanium Specifications

General

Display Type	LCD
Display Resolution	160 x 100 pixels
CPU	Motorola 68000
CPU Speed	16 MHz
RAM	256 KB
Flash ROM	2.7 MB
Programming Language	TI-BASIC, Assembly
Power Source	4 AAA batteries
Connectivity	I/O port
Dimensions	7.5 x 3.5 x 1 inches