Casio FX2.0 Owner's Manual download pdf (Page 16)

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.

y쎾 → Y1 (3(y(n))b)

y앨 → Y2 (3(y(n))c)

(3)

→ Y3 (3(y(n))d)

5. Specify the initial value for x0, y0, y쎾0, and y앨0.

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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Casio FX2.0 Owner's Manual Page 16