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In the example, the default
window variable values are
set initially.
Entering and Solving Differential Equations
In
graphing mode,
Func
conflict between
equations and
Func
variable and
n is the equation variable in
Q'
an equation in the differential equation editor, you must express it in terms of
For example, to express the first-order differential equation y'=x
2
for x
and
for y', and then enter
Q'1
Graphing in SlpFld Format
Display the mode screen and set
graphing mode.
Display the format screen and set
field format.
Display the equation editor and store the
differential equation y'=x
for y' and
t
for x. Clear any other
equations.
Display the initial conditions editor and
enter the initial conditions. A small square
indicates that an initial condition is required.
Chapter 10: Differential Equation Graphing
is the independent variable and
x
equations on the TI-86,
DifEq
DifEq
2
in the equation editor.
Q'1=t
- m # # #
DifEq
# " " " b
6 / & #
SlpFld
# # # # b
& & I
2
, substituting
Q'1
- g
is the equation variable. To avoid
y
is the independent
t
graphing mode. Therefore, when you enter
2
, you would substitute
3
139
and
n.
t
Q'
2
t
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