Setting The Axes; Differential Equation Graphing Tips - Texas Instruments TI-86 Manual Book

Axes information is stored to
and variables.
GDB PIC

Setting the Axes

To display the axes editor, select
assigns a variable to the x-axis
x=
assigns a variable to the y-axis
y=
At the and prompts, you can enter the independent variable
x= y=
n, where n is an integer ‚ 1 and  9. If you assign
Q'
axis, only the equation stored to
equation editor are not plotted; their selection status is ignored.
second-order equations with
The axes editor and defaults for each field format are shown below. When
format is set, the x-axis is always
When format is set:
SlpFld

Differential Equation Graphing Tips

Since the TI-86 plots slope fields and direction fields before it plots equations, you can
press b to pause the graph and view the fields with no solutions plotted.
If you do not specify initial conditions for the equations assigned to the axes, the TI-86
simply draws the field and stops. This gives you access to both the field format options
and the interactive initial conditions simultaneously.
Chapter 10: Differential Equation Graphing
from the
AXES GRAPH
specifies a point in time (real number)
dTime=
(resolution) sets number of rows (1 through 25)
fldRes=
t
n or n is plotted; other differential equations in the
Q Q'
in either equation.
t
, so the
t AXES: SlpFld
When format is set:
DirFld
mode (6 )).
menu in
DifEq
, as well as
t
to one axis and n or
Q Q'
is only valid for
dTime
SlpFld
editor does not display
When format is set:
FldOff
137
, , n, or
Q Q' Q
n to the other
field
.
x=t