Hp 48g Graphing Calculator Uživatelský manuál Strana 311

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Differential Equation Plots
Differential equation plotting is covered in detail in chapter 19. For
an additional example of a differential equation plot, install TEFiCH (if
necessary), and then press EXAM PLOTS DiEQ :
Special Notes
■ The Diff Eq plot type uses the axes element of PPAR in a special
way. It expects the two strings that normally contain axis-labels
to each contain an integer. The integers indicate wdiich solution
component to plot on each axis (“0” indicates the independent
variable, “1" indicates the first (or only) solution component,
“2" indicates the second solution component (for a vector-valued
solution), and so forth.
23
Conic Plots
The equation for a conic section is second degree or less in both x and
y. For example, the following equations are all valid equations for
plotting conic sections:
-F j/^ -F 4* -F 2t/ — 5 = 0 (circle)
5*2 -F 3j/2 - 18 = 0
*2 _ 4x -F 3?/ -F 2 = 0
(ellipse)
(parabola)
2*2 _ 3y2 3y _ 5 = 0 (hyperbola)
Plot Types 23-11
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