Casio ALGEBRA FX2.0 series User Manual
Page 16
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4-3
Differential Equations of the Nth Order
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
n
first order
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.
y
n → Y1 (3(
y
(n)
)b)
y
Ș → Y2 (3(
y
(n)
)c)
y
(3)
→ Y3 (3(
y
(n)
)d)
5. Specify the initial value for
x
0
,
y
0
,
y
n
0
, and
y
Ș
0
.
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.
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