Texas Instruments TITANIUM TI-89 - Manual (Page 441)

Differential Equation Graphing 441
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Important: Change tstep from .1 (its default) to 1. Otherwise, BldData calculates too
many rows for the data variable and a Dimension error occurs.
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t0=0.
tmax=100.
tstep=1.
tplot=0. xmin= L 1.
xmax=100.
xscl=1.
ymin=
L 10.
ymax=10
yscl=1.
ncurves=0.
diftol=.001
7. In the Home screen
@
"
"
use BldData to create a data variable
containing the RK graphing points.
8. Return to the Y= Editor, press:
,
9
— or —
@ 8 Í
Set Solution Method = EULER .
Note: You do not need to graph the
equation before using BldData . For more
information about BldData , refer to the
Technical Reference module.
9. Return to the Home screen, and use
BldData to create a data variable
containing the Euler graphing points.
BldData rklog
BldData eulerlog