Casio fxcp400 fxcp400 User Manual

Chapter 5: Differential Equation Graph Application

  118

This chapter explains how to use the Differential Equation Graph 
application, which you can use to investigate families of solutions to 
ordinary differential equations.

The Differential Equation Graph application has the following two types of 
windows.

1 Differential Equation Editor window

Use this window to input expressions ([DiffEq] tab) and initial conditions 
([IC] tab) for graphing. You also can input 

 (

) type functions ([Graphs] 

tab).

2 Differential Equation Graph window

This window shows the graph of the expression that you input into the 
Editor window. 

1

2

• Graph the selected function(s) ....................................................................................................................

O

• Display the View Window dialog box to configure Differential Equation Graph window settings ................6

• Display the Main application window ..........................................................................................................~

• Delete the line of data at the current cursor location ..................................................................................q

• Input a single first order differential equation ................................................... Type - 1st (Slope Field) or 

A

• Input a single second order differential equation or a set of 

two first order differential equations ........................................................ Type - 2nd (Phase Plane) or 

B

• Input a higher order differential equation or a set of multiple 

differential equations  .....................................................................................  Type - Nth (No Field) or 

9

• Input 

(

) type functions .........................................................................................................Type - 

(

) or d

• Input parametric functions ......................................................................................... Type - Parametric or g

• Change graph line thickness to normal (1-dot line) or thick (2-dot line)  ..............................................

F, G

• Toggle arrows on or off to indicate the direction of slope field or 

phase plane vectors ............................................................................................................... Edit - Arrows