Casio CFX-9850G PLUS Manuel utilisateur
Graph-to-Table
With this function, the screen shows both a graph and a table.
You can move a pointer around the graph and store its current
coordinates inside the table whenever you want. This function is
very useful for summarizing graph analysis results.
•Be sure to read “Chapter 8 Graphing” and “Chapter 9 Graph
Solve” before trying to perform any of the operations described
in this chapter.
12-1 Before Using Graph-to-Table
12-2 Using Graph-to-Table
12
Chapter
176
12-1 Before Using Graph-to-Table
1. In the Main Menu, select the GRAPH icon and enter the GRAPH Mode. Next,
use the set up screen to set the Dual Screen item to “G to T”.
2. Press Jand the Graph-to-Table menu appears.
•For the meaning of the items in the function menu at the bottom of the screen,
see “8-1 Before Trying to Draw a Graph”.
•Whenever the set up screen’s Dual Screen item is set to “G to T”, you can
only store rectangular coordinate (Y=), polar coordinate (r=), and parametric
function graphs in memory.
•You cannot use Graph-to-Table to display split graph/table screens using
X=constant or inequality graphs of functions stored in the GRAPH or TABLE
Mode.
P. 7
P. 11 2
177
12-2 Using Graph-to-Table
uu
uu
uTo store graph pointer coordinates in a table
•If the Derivative item in the set up screen is set to “On”, the derivative at the
location of the trace pointer is also stored in the table.
Example To store the points of intersection and the coordinates for the
following graphs where X = 0:
Y1 = x2– 3 Y2 = –x+ 2
Use the following View Window parameters.
Xmin = –5 Ymin = –10
Xmax = 5 Ymax = 10
Xscale = 1 Yscale = 2
1. Input the two functions.
2. Press 6(DRAW) (or w) to draw the
graph in the left half of the screen.
3. Press 1(Trace) and then use dto move the pointer to the first intersection.
4. Press wto store the coordinates of
the pointer location in the table on the
right side of the screen.
5. Use eto move the pointer to the point
where X = 0 and then press w.
Next, move the pointer to the next
intersection and press wagain.
P. 5
x
/
y
-coordinate value
178
6. Pressing Acauses the highlighting to
appear in the table. You can then use
the cursor keys to move the highlighting
around the table and check its values.
Press Aagain to return the pointer to
the graph screen.
uu
uu
uTo save numeric table values in a list file
You can save columns of values into list files. Up to six values can be stored in a
list file.
•The highlighting can be located in any row of the column whose data you want
to save in the list.
Example To save the x-coordinate data of the previous example in List 1.
1. Starting from the screen that appears in step 6 of the previous example, press
K. The following function menu appears.
• {CHNG} ... {changes the active screen (between left and right)}
• {LMEM} ... {saves table column to list file}
• {PICT} ... {saves graph data to graph memory}
2. Press 2(LMEM).
3. Press 1(List1) to store the data in the x-coordinate column into List 1.
•Table data uses the same memory as TABLE menu table data.
•Always be sure to store table data into a list.
•Any of the following operations causes table data to be deleted.
—Editing expression data
—Changing set up screen or View Window settings
—Changing to a different mode
•If you save data into a list that already contains data, the previous data is
replaced with the new data.
•For details on recalling numeric data saved in a list file, see “17. List Function”.
12 - 2 Using Graph-to-Table
P. 139
P. 229
179
Using Graph-to-Table 12 - 2
kk
kk
kGraph-to-Table Precautions
•The only coordinates that can be saved in the table are those where the
pointer can move to using trace and graph solve.
•The only graph functions that can be used with a graph produced using the
Graph-to-Table are: trace, scroll, zoom, and graph solve (excluding integra-
tion calculations).
•Graph functions cannot be used while the highlighting is blinking in the table.
To clear the highlighting and make the graph side the active screen, press
K1(CHNG).
•Kkey operation is disabled whenever a graph and table are both on the
screen and there is no numeric data in the table, and when the screen is not
split (i.e. when either the graph or table only is on the display).
•An error occurs if a graph for which a range is specified or an overwrite graph
is included among the graph expressions.
180
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