HP 48gII hp 48gII_user's manual_English_E_HDPMSG48E67_V2.pdf - Page 392

To add labels to the graph press @EDIT L@)LABEL. Press @MENU to remove the menu labels, and get a full view of the graph. Press LL@)PICT! @CANCL to return to the PLOT WINDOW - FUNCTION. Press ` to return to normal calculator display. The PPAR variable Press J to recover your variables menu, if needed. In your variables menu you should have a variable labeled PPAR . Press ,@PPAR to get the contents of this variable in the stack. Press the down-arrow key, , to launch the stack editor, and use the up- and down-arrow keys to view the full contents of PPAR. The screen will show the following values: PPAR stands for Plot PARameters, and its contents include two ordered pairs of real numbers, (-8.,-1.10797263281) and (2.,7.38905609893), which represent the coordinates of the lower left corner and the upper right corner of the plot, respectively. Next, PPAR lists the name of the independent variable, X, followed by a number that specifies the increment of the independent variable in the generation of the plot. The value shown here is the default value, zero (0.), which specifies increments in X corresponding to 1 pixel in the graphics display. The next element in PPAR is a list containing first the coordinates of the point of intersection of the plot axes, i.e., (0.,0.), followed by a list that specifies the tick mark annotation on the x- and y-axes, respectively {# 10d # 10d}. Next, PPAR lists the type of plot that is to be generated, i.e., FUNCTION, and, finally, the y-axis label, i.e., Y. The variable PPAR, if non-existent, is generated every time you create a plot. The contents of the function will change depending on the type of plot and on the options that you select in the PLOT window (the window generated by the simultaneous activation of the „ and ò(B) keys. Page 12-11