Texas Instruments TI-89 Titanium Short User Manual

108 Activities
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.
3. Enter the equation to solve for i using the
with operator.
solve(s=p†(1+i)^n,i) | s=2000 and p=1000
and n=6
Result: The interest rate is 12.246%.
Note:
• To enter the “with” ( | ) operator:
@ Í
• Press 8 ¸ to obtain a floating-
point result.
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