Texas Instruments TI-89 Manuale Utente
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4. Draw a horizontal line across the top of
the cosine curve.
The calculator remains in “horizontal”
mode until you select a different operation
or press
mode until you select a different operation
or press
N.
Press
2 ‰ 5 C
(until the line is
positioned)
¸
5. Save a picture of the graph. Use
PIC1
as
the variable name for the picture.
Be sure to set
Type = Picture
. By default, it
is set to
GDB
.
Press
, 2 B 2 D D PIC j 1 ¸
¸
6. Clear the drawn horizontal line.
You can also press
† to regraph.
Press
2 ˆ 1
Steps and keystrokes
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