Hp 48g Graphing Calculator Manuel d'utilisateur Page 330

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Example:
Enter the «/-coordinate of the eyepoint. It must be
at least one unit smaller than the value for Y--NEflR»
above. The greater the difference between YE 5 and
Y-NEFlR s, the “farther away” the plot will appear.
Enter the 2-coordinate of the eyepoint. Use the
midpoint of the 2-axis range for the View Volume if you
want the plot “centered” vertically in the display.
Display the Wireframe example plot, WIRE :
2 = x^y — xy^. If necessary, type in TEACH to install the
EXAMPLES directory and then:
Press fVAR)
fNXT)
23
After plotting, press (CANCEL) frRfPLOT) to review the PLOT forms
that generated the plot. Experiment by changing values or settings
and redrawing the plot.
Pseudo-Contour Plots
The Ps-Contour plot type plots a lattice of line segments, each tangent
to a contour of the function (a curve satisfying f’("a;,?/j=constant).
It computes a tangent for each point in the sampling grid. The
Ps-Contour produces a “fast” contour plot, allowing your eye to pick
out the integral curves (contours) without actually plotting them.
23-30 Plot Types
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