Previews 99
4. Draw a horizontal line across the top of
the cosine curve.
The calculator remains in “line” mode until
you select a different operation or press
N.
@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.
@, 2 B 2 D D PIC j 1 ¸
¸
6. Clear the drawn horizontal line.
You can also press † to regraph.
@2 ˆ 1
7. Open the saved picture variable to
redisplay the graph with the line.
Be sure to set
Type = Picture. By default, it
is set to
GDB.
Press , 1 B 2 (if not already shown,
also set Variable = pic1) ¸
Steps and keystrokes Display
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