Casio CLASSWIZ CG Software User's Manual page 84

4. To exit graph analysis, press b.
Using Trace (Trace)
Trace displays a crosshair pointer (
location. When S >
[Derivative] (page 219)
coordinate values.
To enable trace
Select T > [Trace].
The operations that can be performed while the trace function is enabled are described in the table below.
To do this:
Move the pointer along the graph
Move to pointer to a specific x -coordinate on the graph
When there are multiple graphs, the pointer will move between
them
Plot a dot with coordinate values on a graph
Exit trace
* If the dot location is within the coordinates of a graph, it is displayed as a solid red dot ( ). If the dot location
is not within the coordinates of the graph, it is displayed as a red circle ( ).
Modifying a Graph by Changing the Coefficient Values of Its Function (Modify)
You can input a functional expression with five alpha variables included in the coefficients (such as y = Ax + B)
and then change the values of the variables (coefficient values) while the graph is displayed. This lets you see
how changes in the coefficient values affect the appearance of the graph.
Important!
• When multiple functions are selected for graphing, modify cannot be used if there are more than two
functions that contain variables.
2
Example: Input y = Ax
are changed. The initial values of A, B, and C are A = 1, B = 0, and C = 0.
1. On the Function tab, input y = Ax
• Select T > [Built-In Function] > [ y =A x ^2+B x +C] and then input the function.
2. Turn off all other function expression graphing settings.
• See "To select a function to draw a graph and create a numeric table" (page
3. Press > to draw the graph.
4. Select T > [Modify] to enable modify.
• The current values of A, B, and C and the step value are
displayed in the lower-left corner of the graph window. You
can change the value where the pointer (I) is currently
located.
• Use d and u to move the pointer (I) up and down.
5. Use l and r to change the value of A.
) on a graph that you can use to read the coordinate values at a specific
is turned on, derivative coefficients are displayed along with the
*
+ Bx + C and observe how the shape of the graph is affected when the coefficient values
2
+ Bx + C.
Perform this operation:
Press l or r.
Use the number keys to input an
x -coordinate value and then press O.
Press d or u.
Move the pointer to the location where you
want to plot a dot with coordinate values
and then press O.
Press b.
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*2
78).