Differential Equation Graphing
407
Setting the Initial Conditions
You can enter initial conditions in the Y= Editor, let the TI-89 Titanium calculate initial
conditions automatically, or select them interactively from the Graph screen.
Entering Initial Conditions in the Y= Editor
You can specify one or more initial conditions in the Y= Editor. To specify more than one,
enter them as a list enclosed in braces { } and separated by commas.
For a 2nd- or higher-order differential equation, you must define a system of 1st-order
equations in the Y= Editor.
To enter initial conditions for the
y1'
equation,
use the
yi1
line, etc.
If you enter initial conditions, you must enter
the same number of initial conditions for each
equation in the system. Otherwise, a
Dimension error occurs.
To specify when the initial conditions occur,
use t0. This is also the first t evaluated for
the graph.
To graph a family of solutions, enter a list of
initial conditions.
Enter {10,20} even
though {10 20} is
displayed.
Summary of Contents for Titanium TI-89
Page 9: ...Getting Started 6 TI 89 Titanium keys Ë Ì Í Ê ...
Page 34: ...Getting Started 31 2 or D 2 B u s i n e s s D B D B Press Result ...
Page 43: ...Getting Started 40 3 0 D B D D B D Press Result ...
Page 44: ...Getting Started 41 D 2 0 0 2 D B Scroll down to October and press Press Result ...
Page 58: ...Getting Started 55 Example Set split screen mode to TOP BOTTOM Press Result 3 B D ...
Page 70: ...Getting Started 67 ...
Page 175: ...Operating the Calculator 172 From the Keyboard ...
Page 456: ...Tables 453 ...
Page 527: ...Data Matrix Editor 524 ...
