Casio FX-9750GII - Manual (Page 135)

5-29
 (TYPE)(Y=)TT
AT_
AU
 (DRAW)

 C~CU* 1
* 1 You can draw a tangent line in succession by moving the “ ” pointer and pressing U.
12. Function Analysis
I Reading Coordinates on a Graph Line
Trace lets you move a pointer along a graph and read out coordinates on the display.
1. From the Main Menu, enter the GRAPH mode.
2. Draw the graph.
3. Press 1
4. Use B and C to move the pointer along the graph to
the point at which you want to display the derivative.
When there are multiple graphs on the display, press \
D and A to move between them along the x -axis of
the current pointer location.
5. You can also move the pointer by pressing T to display the pop-up window, and then
inputting coordinates.
The pop-up window appears even when you input coordinates directly.
To exit a trace operation, press
* 1 The pointer is not visible on the graph when it is located at a point outside the graph display
area or when an error of no value occurs.
• You can turn off display of the coordinates at the pointer location by specifying “Off” for the
“Coord” item on the Setup screen.
• The following shows how coordinates are displayed for each function type.
Polar Coordinate Graph
Parametric Graph
Inequality Graph
I Displaying the Derivative
In addition to using Trace to display coordinates, you can also display the derivative at the
current pointer location.