Casio Differential Equation Software Manual page 16

k Converting a High-order Differential Equation to a System of the First
Order Differential Equations
You can convert a single N-th order differential equation to a system of
differential equations.
Set Up
1. From the Main Menu, enter the DIFF EQ Mode.
Execution (N = 3)
2. Press 3(N-th).
3. Press 3( n
)d to select a differential equation of the third order.
4. Perform substitutions as follows.
n
y
Y1 (3(
y
Y2 (3(
y
(3) Y3 (3(
5. Specify the initial value for
6. Press 2( SYS).
7. Press w(Yes).
• The entered differential equation is converted to a system of three first order
differential equations. Initial values are also converted accordingly.
4-3
Differential Equations of the Nth Order
y
)b)
(n)
y
)c)
(n)
y
)d)
(n)
n
x y y
, , , and
0 0 0
n
y
.
0
first order