Setting Axes For Time Or Custom Plots - Texas Instruments TI-89 Manual Book

Setting Axes for Time or Custom Plots

Displaying the
Dialog Box
AXES
Note: t is not valid for
either Axis when
Fields=DIRFLD . If you
select t, an Invalid axes
error occurs when graphing.
190 Chapter 11: Differential Equation Graphing
Setting the axes can give you great flexibility in graphing
differential equations. Custom axes are particularly effective
for showing different kinds of relationships.
From the Y= Editor, press:
: 2 ‰
TI-89
TI-92 Plus: ‰
Item Description
— Plots
Axes TIME
selected differential equations) on the y axis.
CUSTOM
, Active only when
X Axis
Y Axis what you want to plot on the x and y axes.
— time
t
— solutions (
y
equations
— values of all selected differential equations (
y'
y2' , etc.)
, , etc. — the solution to the corresponding
y1 y2
differential equation, regardless of whether that
equation is selected
, , etc. — the value of the right-hand side of the
y1' y2'
corresponding differential equation, regardless of
whether that equation is selected
If Fields = SLPFLD
unavailable.
: 2 ‰
TI-89
TI-92 Plus: ‰
on the x axis and
t
— Lets you select the x and y axes.
=
Axes CUSTOM
, , etc.) of all selected differential
y1 y2
, Axes is
(solutions to all
y
, these let you select
,
y1'