Texas Instruments TI-89 - Page 348

Chapter 18: Text Editor 331
18TXTED.DOC TI-89/TI-92 Plus: Text Editor (English) Susan Gullord Revised: 02/23/01 1:15 PM Printed: 02/23/01 2:18 PM Page 331 of 18
General Steps For Detailed Information
1. Connect the
TI
-
89 / TI
-
92 Plus
to your
computer via the
TI-GRAPH
LINK
cable.
Refer to the manual that came
with your
TI-GRAPH LINK
.
2. Use the
TI-GRAPH LINK
software to get the lab
report from the calculator,
and then print the report.
A
ssume you have stored:
¦
A function as
y1(x)
(specify
y1
, not
y1(x)
).
¦
A graph picture as
pic1
.
¦
Applicable information in
variables
der
and
sol
.
When you print the lab report,
the contents of the print
objects are printed in place of
their variable names.
My assignment was to study the function:
.1*x^3
ì
.5*x+3
The three parts were:
1. Graph the function.
2. Find its derivative.
.3*x^2
ì
.5
3. Look for critical points.
x=1.29099 or x=
ì
1.29099
In cases where a graph picture cannot fit on the current page, the
entire picture is shifted to the top of the next page.
Printing the Report
Example
Note: To store the
derivative to variable der,
enter:
d
(y1(x),x)
!
der
Note: To store the
derivative’s critical points to
variable sol, enter:
solve
(der=0,x)
!
sol