Chapter 15 Table & Graph With Table & Graph, you can generate tables of discreet data from functions and recursion formulas, and then use the values for graphing. Because of this, Table & Graph makes it easy to grasp the nature of numeric tables and recursion formulas.
15-1 Before Using Table & Graph First select the TABLE icon on the Main Menu and then enter the TABLE Mode. When you do, the table function list appears on the display. • {SEL} ... {numeric table generation/non-generation status} • {DEL} ... {function delete} • {TYPE} ... {function type specification} • {COLR} ... {graph color specification} CFX • {RANG} ... {table range specification screen} • {TABL} ...
15-2 Storing a Function and Generating a Numeric Table uTo store a function Example To store the function y = 3x2 – 2 in memory area Y1 Use f and c to move the highlighting in the TABLE Mode function list to the memory area where you want to store the function. Next, input the function and press w to store it. k Variable Specifications There are two methods you can use to specify value for the variable x when generating a numeric table.
15 - 2 Storing a Function and Generating a Numeric Table uTo generate a table using a list 1. In the TABLE Mode, display the set up screen. 2. Highlight Variable and then press 2 (LIST) to display the list menu. 3. Select the list you want to use. • To select List 6, for example, press 6 (List6). This causes the setting of the Variable item of the set up screen to change to List 6. 4. After specifying the list you want to use, press J to return to the previous screen.
Storing a Function and Generating a Numeric Table 15 - 2 You can use cursor keys to move the highlighting around the table for the following purposes. • To display the selected cell’s value at the bottom of the screen, using the calculator’s current number of decimal place, number of significant digit, and exponential display range settings. • To scroll the display and view parts of the table that do not fit in the display.
15 - 2 Storing a Function and Generating a Numeric Table 15-3 Editing and Deleting Functions uTo edit a function Example To change the function in memory area Y1 from y = 3x2 – 2 to y = 3x2 – 5 Use f and c to move the highlighting in the TABLE Mode list to the function you want to edit. Use d and e to move the cursor to the location of the change.
15-4 Editing Tables and Drawing Graphs You can use the table menu to perform any of the following operations once you generate a table. • Change the values of variable x • Edit (delete, insert, and append) rows • Delete a table • Draw a connect type graph • Draw a plot type graph While the Table & Graph menu is on the display, press 6 (TABL) to display the table menu. • {FORM} ... {display function list} • {DEL} ... {delete table} • {ROW} ... {display menu of row operations} P.128 • {G·CON}/{G·PLT} ...
15 - 4 Editing Tables and Drawing Graphs k Row Operations The following menu appears whenever you press 3 (ROW) while the table menu is on the display. • {DEL} ... {delete row} • {INS} ... {insert row} • {ADD} ...
Editing Tables and Drawing Graphs 15 - 4 k Deleting a Table 1. Display the table you want to delete and then press 2 (DEL). 2. Press 1 (YES) to delete the table or 6 (NO) to abort the operation without deleting anything. k Graphing a Function Before drawing a function graph, you must first specify the following. • Graph color (blue, orange, green) CFX • Draw/non-draw status of the function uTo specify the graph color CFX The default color for a graph is blue.
15 - 4 Editing Tables and Drawing Graphs uTo graph only a selected function Example To graph y = 3x2 – 2, which is stored in memory area Y1, as a connect type graph. Use the following View Window parameters. Xmin = 0 Ymin = –2 Xmax = 6 Ymax = 106 Xscale = 1 Yscale = 2 c1(SEL) (Specifies graph non-draw.) No highlighting 6(TABL) 5(G·CON) (Specifies connect type graph.
Editing Tables and Drawing Graphs 15 - 4 uTo graph a function using Dual Screen P.7 Selecting “T+G” for the Dual Screen item of the set up screen makes it possible to display both the graph and its numeric table of values. Example To graph y = 3x2 – 2 in memory area Y1, displaying both the graph and its table Use the same View Window parameters as in the example on page 214. Display the set up screen and specify “T+G” for Dual Screen. Press J. 6(TABL) (Shows the table.
15-5 Copying a Table Column to a List A simple operation lets you copy the contents of a numeric table column into a list. uTo copy a table to a list Example To copy the contents of Column x into List 1 K1(LIST)2(LMEM) 1 2 3 4 5 6 • You can select any row of the column you want to copy. Press the function key that corresponds the list you want to copy to.
