Texas Instruments TI-89 Titanium User Manual

Activities 748
Summary
Note that
zc is zero for each of the function values in steps 7–9. Thus, the complex zeros
1,L
i, i of the polynomial x
3
Nx
2
+xN1 can be visualized with the three points where the
graph of the modulus surface touches the
xy plane.
Solving a Standard Annuity Problem
This activity can be used to find the interest rate, starting principal, number of
compounding periods, and future value of an annuity.
9. Use the Trace tool to explore the function
values at
x=0 and y=1.
10. Use the Trace tool to explore the function
values at
x=0 and y=L1.

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