Casio 330 - Manual (Page 838)

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14-7-7
Differential Equation Graph Window Operations
(3) From the eActivity application menu, tap [Insert], [Strip], and then [DiffEqGraph].
• This inserts a Differential Equation Graph data strip,
and displays the Differential Equation Graph window
in the lower half of the screen.
S To graph the slope field and solution curves by dropping a 1st-order
differential equation and matrix into the Differential Equation Graph
window
Example: To drag the 1st-order differential equation y’ = exp(x) + x 2 and then the initial
condition matrix [0,1] from the eActivity application window to the Differential
Equation Graph window, and graph the applicable slope field and solution curve
(1) On the application menu, tap .
• This starts up the eActivity application.
(2) On the eActivity application window, input the following expression and matrix.
y’ = exp(x) + x 2
[0,1]
To draw this type of graph:
Drop this type of expression or value into the
Differential Equation Graph window:
Slope field 1st-order differential equation in the form of y' = f (x, y)
Solution curve(s) of a 1st-order
differential equation Matrix of initial conditions in the following form:
[[x
1
, y(x
1
)][x
2
, y(x
2
)], .... [x
n
, y(x
n
)]]
• Slope field must already have been graphed. If not,
only points will be plotted and initial conditions are
registered in the initial condition editor ([IC] tab).
Solution curve(s) of an Nth-order
differential equation 1) Nth-order differential equation such as y’’+ y’+ y =
sin(x), followed by
2) Matrix of initial conditions in the following form:
[[x
1
, y1(x
1
)],[x
2
, y1(x
2
)], .... [x
n
, y1(x
n
)]] or [[x
1
, y1(x
1
),
y2(x
1
)],[x
2
, y1(x
2
), y2(x
2
)], .... [x
n
, y1(x
n
), y2(x
n
)]]
f (x) type function graph Function in the form y = f (x)