Function Analysis - Casio fx-9750GII User Manual

(TYPE)
(DRAW)
(SKTCH)
~
1
* You can draw a tangent line in succession by moving the "

12. Function Analysis

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
4. Use and
the point at which you want to display the derivative.
When there are multiple graphs on the display, press
and to move between them along the
the current pointer location.
5. You can also move the pointer by pressing
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
Displaying the Derivative
In addition to using Trace to display coordinates, you can also display the derivative at the
current pointer location.
(Y=)
(Tang)
* 1
(TRCE), and a pointer appears in the center of the graph.*
to move the pointer along the graph to
x
-axis of
to display the pop-up window, and then
(TRCE).
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" pointer and pressing
1
.