Texas Instruments TI-89 Titanium User Manual page 431

10. Use the
Data/Matrix Editor
create a new data variable named
.
errorlog
Note: errorlog
in and
rklog eulerlog
the two sets of data side by side.
11. In this new data variable, define the
, and column headers to refer to data
c2 c3
in and
rklog eulerlog
titles as shown.
To define a column header, move the
cursor to that column, press †, type the
reference expression (such as
), and press ¸.
c1
Note: rklog[1]
column 1 and 2 in
Likewise with
12. In the
Data/Matrix Editor
press , and define
data, as shown to the right.
13. Define for the
Plot 2
values shown to the right.
14. Return to the Y= Editor, press 3, and
set
Graph = FUNCTION
Differential Equation Graphing
(O) to
lets you combine the data
so that you can view
. Also, enter column
rklog[1]
and refer to
rklog[2]
, respectively.
rklog
.
eulerlog[2]
, press „. Then
for the
Plot 1
data. Use the
Euler
.
Ê
,
c1
for
Ê
c1=rklog[1] or
c1=eulerlog[1]
Ë
c2=rklog[2]
Ì
c3= eulerlog[2]
RK
Plot Type=xyline
Mark=Cross
x=c1
y=c3
Ë Ì
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