Calculator User Manual

Chapter 1: Operating the TI
-
86
27
01OPER.DOC TI-86, Chap 1, US English Bob Fedorisko Revised: 02/13/01 2:18 PM Printed: 02/13/01 2:59 PM Page 27 of 2201OPER.DOC TI-86, Chap 1, US English Bob Fedorisko Revised: 02/13/01 2:18 PM Printed: 02/13/01 2:59 PM Page 27 of 22
When you interrupt a graph, a partial graph and the
GRAPH
menu are displayed.
♦
To return to the home screen, press
: :
or any non-graphing key.
♦
To restart graphing, select an instruction that displays the graph.
Diagnosing an Error
When the TI
-
86 detects an error, it returns an error
message, such as
ERROR 04 DOMAIN
or
ERROR 07 SYNTAX
.
The Appendix describes each error type and possible
reasons for the error.
♦
If you select
QUIT
(or press
- l
or
:
:
), the home screen is displayed.
♦
If you select
GOTO
, the previous screen is displayed with the cursor on or near the error.
Correcting an Error

Note the error type (
ERROR ## errorType
).

Select
GOTO
, if available. The previous screen is displayed with the cursor on or near the error.

Determine the cause for the error. If you cannot, refer to the Appendix for possible causes.

Correct the error and continue.
Chapter 5: Function Graphin
g
introduces graphing.
If a syntax error occurs within
a stored equation during
program execution, select
GOTO
to return to the
equation editor, not to the
program (Chapter 5).