Casio Algebra FX 2.0 PLUS User Manual page 98

6. Specify variables to graph or to store in LIST.
Press 5(SET) and select c(Output) to display the list setting screen.
x y y y
, , , , .....,
(1) (2)
first order derivative, the second order derivative, ....., and the eighth order derivative,
respectively.
1st, 2nd, 3rd, ...., 9th stand for the initial values in order.
To specify a variable to graph, select it using the cursor keys (f, c) and press
1(SEL).
To specify a variable to store in LIST, select it using the cursor keys (f, c) and
press 2(LIST).
7. Press !K(V-Window) to display the V-Window setting screen. Before you solve a
differential equation, you need to make V-Window settings.
x
Xmin ... -axis minimum value
x
max ... -axis maximum value
x
scale ... -axis value spacing
dot ... value corresponding to one
y
Ymin ... -axis minimum value
y
max ... -axis maximum value
y
scale ... -axis value spacing
8. Press 6(CALC) to solve the differential equation.
• The calculated result is graphed or stored in the list.
# Only the slope fields are displayed if you do
not input initial values or if you input the wrong
type of initial values.
# An error occurs if you set SF to zero and you
do not input the initial values, or if you input
the initial values inappropriately.
# You are advised to input parentheses and a
multiplication sign between a value and an
expression in order to prevent calculation
errors.
# Do not confuse the - key and the - key.
A syntax error occurs if you use the - key
as the subtraction symbol.
3-1-2
Using the DIFF EQ Mode
y
stand for the independent variable, the dependent variable, the
(8)
x
20010101
-axis dot
# An error occurs if you input variable
f x x
function ( ). Variable
variable. Other variables (A through
excluding X and Y) are treated as constants
and the value currently assigned to that
variable is applied during the calculation.
# An error occurs if you input variable
g y y
function ( ). Variable
variable. Other variables (A through
excluding X and Y) are treated as constants
and the value currently assigned to that
variable is applied during the calculation.
y
in the
is treated as a
Ζ
r , θ ,
,
x
in the
is treated as a
Ζ
, θ ,
r
,