Casio FX-9750G plus User Manual page 194

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Graphing with the Sketch Function
u u u u u To check the on/off status of a pixel
While the sketch menu is on the screen, press 6 (g) 6 (g) 4 (Test) and then
input the command shown below to check the status of the specified pixel. 1 is
returned when the pixel is on, and 0 is returned when the pixel is off.
PxlTest <line number>, <column number>
• Specify a line in the range of 1 to 63 and a column in the range of 1 to 127.
• Trying to perform one of the above operations without specifying a line and
column number results in an error.
• Pixel operations are valid only within the allowable line and column ranges.
k k k k k Clearing Drawn Lines and Points
The following operation clears all drawn lines and points from the screen.
u u u u u To clear lines and points in the STAT, GRAPH, TABLE, RECUR and
CONICS Modes
Lines and points drawn using sketch menu functions are temporary. Display the
sketch menu and press 1 (Cls) to clear drawn lines and points, leaving only the
original graph.
u u u u u To clear drawn lines and points in the RUN or PRGM Mode
The following is the syntax for clearing drawn lines and points, as well as the
graph itself.
Cls
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[Sketch]-[Test]
[Sketch]-[Cls]