Hp 49g Graphing Calculator Manuel d'utilisateur Page 85

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Truth plots
Truth plots evaluate expressions that return a true result (that is, any non
zero real number) or a false result (that is, 0). At the coordinates of each
pixel, the pixel is turned on if the expression is true or is left unchanged if
the expression is false.
The following example is a plot of -i- mod 2 < 4.
HinDOH - TRUTH
LOT SETUP
H-u; gu -.gySLiiim m ^ q
7.2 E0:TTH
Indep U.h: 0. Hi3h:S.5
Step: Defeyl.t Pixels
IndepDepnd:¥
H-Tick:10. M-TiCh:10. ¿PiXel5
Enter HiniHUM h->ri2i-nt<il Melue
Choose type of plot
Figure 4-13: Default plot window and plot setup parameters for truth plots
Figure 4-14; Sample truth plot
Plot window parameters
H-View
V-View
Indep Low
Indep High
Step
The horizontal display range, with the minimum
horizontal value in the first field and maximum horizontal
value in the second field.
The vertical display range, with the minimum vertical
value in the first field and maximum vertical value in the
second field.
The smallest value of the independent variable that you
want plotted.
The greatest value of the independent variable that you
want plotted.
Detemiines the resolution of the plot. It is the horizontal
distance—in units or pixels—between two plotted points.
Larger step sizes provide speedier plots, but show less
detail. Smaller step sizes provide more detail but take
longer to draw. (For trutl'i plots, the default step size is 1
pixel). See also pixels below.
Plotting graphs
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