Texas Instruments TITANIUM TI-89 - Manual (Page 414)

Differential Equation Graphing 414
Selecting the Display Style Selecting the Display Style Selecting the Display Style Selecting the Display Style
With the Style menu, only the Line , Dot , Square , Thick , Animate , and Path styles are
available. Dot and Square mark only those discrete values (in tstep increments) at which
a differential equation is plotted.
@ 2 ˆ
Setting Graph Formats Setting Graph Formats Setting Graph Formats Setting Graph Formats
The formats affected by differential equations are:
From the Y= Editor, Window Editor, or Graph
screen, press:
,
9
— or —
@ 8 Í
Graph format Description
Graph Order Not available.
Solution Method Specifies the method used to solve the differential
equations.
• RK — Runge-Kutta method. For information about the
algorithm used for this method, refer to the Technical
Reference module.
• EULER — Euler method.
• The method lets you choose either greater accuracy or
speed. Typically, RK is more accurate than EULER but
takes longer to find the solution.