Texas Instruments TI-84 Plus Guide Book

Chapter 17: Activities 485
Solving a System of Nonlinear Equations
Solving a System of Nonlinear EquationsSolving a System of Nonlinear Equations
Solving a System of Nonlinear Equations
Problem
ProblemProblem
Problem
Using a graph, solve the equation x
3
N2x=2cos(x). Stated another way, solve the system
of two equations and two unknowns: y = x
3
N2x and y = 2cos(x). Use ZOOM factors to
control the decimal places displayed on the graph.
Procedure
ProcedureProcedure
Procedure
1. Press z. Select the default mode settings. Press o. Turn off all functions and stat
plots. Enter the functions.
2. Press q
4 to select 4:ZDecimal. The display shows that two solutions may exist
(points where the two functions appear to intersect).
3. Press q ~
4 to select 4:SetFactors from the ZOOM MEMORY menu. Set XFact=10
and
YFact=10.

Texas Instruments TI-84 Plus Specifications

General

Battery type	AAA
Power source	Battery
Number of batteries supported	4
Type	Graphing
Cover	No
Form factor	Pocket
Control type	Buttons
Product color	Black
USB port	Yes
USB 2.0 ports quantity	1
Digits	- digits
Display number of lines	8 lines
Display number of characters	16
RAM capacity	0.024 MB
ROM capacity	0.480 MB
Storage media type	-