Casio ClassPad 101 Guide de l'utilisateur télécharger pdf (Page 121)

Chapter 5: Differential Equation Graph Application 121

Configuring and Modifying Initial Conditions

You can modify an existing initial condition on the Differential Equation Graph window by dragging it. You can

also configure a new initial condition on the Differential Equation Graph window by tapping the coordinates you

want to specify as the new initial condition.

u To modify an initial condition on the Differential Equation Graph window

1. Perform the operation under example 0505 , which will produce a graph like the one shown below to appear

on the Differential Equation Graph window.

These dots are the currently configured initial conditions.

2. Tap [Analysis] - [Select] or G.

3. Tap one of the initial condition dots to select it, and then use the stylus to drag the dot to another location.

• Here we will drag the bottom dot, which is the Initial Condition 1 setting (

xi, y1i, y2i) = (0, −1, 0). The

applicable initial condition will change to the coordinates of the location where you release the stylus after

dragging the dot, and the solution curve will be redrawn accordingly.

u To configure new initial conditions on the Differential Equation Graph window

1. Perform the operation under example 0501 to produce a slope field on the Differential Equation Graph

window.

2. Tap [Analysis] - [Modify] or J.

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Casio ClassPad 101 Guide de l'utilisateur Page 121