HP 48gII hp 48gII_user's manual_English_E_HDPMSG48E67_V2.pdf - Page 426
Dot+ And Dot-, Erase, Label
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points, lines, circles, etc. on the graphics screen, as described below. To see how to use these functions we will try the following exercise: First, we get the graphics screen corresponding to the following instructions: • Press „ô, simultaneously if in RPN mode, to access to the PLOT SETUP window. • Change TYPE to Function, if needed • Change EQ to 'X' • Make sure that Indep: is set to 'X' also • Press L@@@OK@@@ to return to normal calculator display. • Press „ò, simultaneously if in RPN mode, to access the PLOT window (in this case it will be called PLOT -POLAR window). • Change the H-VIEW range to -10 to 10, by using 10\@@@OK@@@ 10@@@OK@@@, and the V-VIEW range to -5 to 5 by using 5\@@@OK@@@ 5@@@OK@@@. • Press @ERASE @DRAW to plot the function. • Press @EDIT L @LABEL to add labels to the graph. Press LL (or „«) to recover the original EDIT menu. Next, we illustrate the use of the different drawing functions on the resulting graphics screen. They require use of the cursor and the arrow keys (š™-˜) to move the cursor about the graphics screen. DOT+ and DOT- When DOT+ is selected, pixels will be activated wherever the cursor moves leaving behind a trace of the cursor position. When DOT- is selected, the opposite effect occurs, i.e., as you move the cursor, pixels will be deleted. For example, use the ™- keys to move the cursor somewhere in the middle of the first quadrant of the x-y plane, then press @DOT+@@. The label will be selected (DOT+ @). Press and hold the ™ key to see a horizontal line being traced. Now, press @DOT-@, to select this option ( @DOT- @ ). Press and hold the š key to see the line you just traced being erased. Press @DOT-, when done, to deselect this option. Page 12-45
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