Casio FXCP400 Configuring and Modifying Initial Conditions, uTo modify an initial condition on the Differential Equation Graph window

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.

uTo 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.

uTo 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.

Chapter 5: Differential Equation Graph Application 121