Casio fx-CG50 User Manual page 195

13. Function Analysis
k 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(TRACE), and a pointer appears in the center of the graph.*
4. Use d and e to move the pointer along the graph to
the point at which you want to display the coordinates.
When there are multiple graphs on the display, press
f and c to move between them along the
the current pointer location.
• At this time, pointer coordinate values appear at the bottom of the screen and to the right
(or left) of the pointer. Also, supplementary lines appear from the pointer to the
y
-axis.
• You can hide the supplementary lines by pressing !c. To redisplay hidden lines,
press !f.
5. You can also move the pointer by pressing v to display the pop-up window, and then
x
inputting an
The pop-up window appears even when you input an
To exit a trace operation, press !1(TRACE).
* 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
value.
x
-axis of
x
value directly.
(Y≥ ≥ , Y≤, X≥, X≤) (Y≥ ≥ , Y≤, X≥, X≤)
(Y>, Y<, X>, X<) (Y>, Y<, X>, X<)
5-54
1
x
-axis and