Trident Help

Classic Graphing 84 manual · Chapter 11 of 25

Tables of values

Show a table of x and y values for your functions, choose where it starts and its step, or ask for individual values.

11.1Show a table#

Enter functions in Y= and press 2ndTABLEgraph (TABLE). The left column is x, followed by a column for each function that is on. ▼ and ▲ scroll, and ◀ and ▶ move between columns. The line at the bottom shows the full value of the highlighted cell. A value that cannot be computed shows ERROR.

Example 11.1

Table of y = x² − 4

  1. Enter Y1 = X²−4 and press 2nd graph.

    y=X,T,θ,nx²−4▼2ndTABLEgraph
Result of the example "Table of y = x² − 4" The display shows: X | Y1 / 0 | ⁻4 / 1 | ⁻3 / 2 | 0 / 3 | 5 / 4 | 12 / 5 | 21 / X=0.
You should seeX | Y1 2 | 0 3 | 5
Example 11.2

Two functions side by side

  1. Enter X and X² and show the table.

    y=X,T,θ,n▼X,T,θ,nx²▼2ndTABLEgraph
Result of the example "Two functions side by side" The display shows: X | Y1 | Y2 / 0 | 0 | 0 / 1 | 1 | 1 / 2 | 2 | 4 / 3 | 3 | 9 / 4 | 4 | 16 / 5 | 5 | 25 / X=0.
You should seeX | Y1 | Y2
Example 11.3

Undefined values

  1. Enter 1/X. At x = 0 there is no value.

    y=1÷X,T,θ,n▼2ndTABLEgraph
Result of the example "Undefined values" The display shows: X | Y1 / 0 | ERROR / 1 | 1 / 2 | .5 / 3 | .333333 / 4 | .25 / 5 | .2 / X=0.
You should see0 | ERROR
Example 11.4

Read the full value of a cell

  1. Enter 1/(3X), show the table, move right to the Y1 column and down one row.

    y=1÷(3X,T,θ,n)▼2ndTABLEgraph▶▼▼
Result of the example "Read the full value of a cell" The display shows: X | Y1 / 0 | ERROR / 1 | .333333 / 2 | .166667 / 3 | .111111 / 4 | .083333 / 5 | .066667 / Y1=.1666666667.
You should seeY1=.1666666667

11.2Choose the start and step (TBLSET)#

Press 2ndTBLSETwindow for TABLE SETUP. TblStart is the first x, ΔTbl is the step between rows. Indpnt AUTO fills x for you; ASK lets you type each x. Depend AUTO computes y for you; ASK waits until you ask for each y.

The TABLE SETUP screen. The display shows: TABLE SETUP / TblStart=0 / ΔTbl=1 / Indpnt: [AUTO] ASK / Depend: [AUTO] ASK.
The TABLE SETUP screen.
Example 11.5

Start at −1 with step 0.5

  1. Enter Y1 = 2X, open TABLE SETUP, type −1 for TblStart, down, .5 for ΔTbl.

    y=2X,T,θ,n▼2ndTBLSETwindow(−)1▼.5▼

  2. Press 2nd graph.

    2ndTABLEgraph
Result of the example "Start at −1 with step 0.5" The display shows: X | Y1 / ⁻1 | ⁻2 / ⁻.5 | ⁻1 / 0 | 0 / .5 | 1 / 1 | 2 / 1.5 | 3 / X=⁻1.
You should see⁻1 | ⁻2 ⁻.5 | ⁻1 0 | 0
Example 11.6

Ask for your own x values

  1. Enter Y1 = X². In TABLE SETUP move down two rows, choose ASK for Indpnt and press enter.

    y=X,T,θ,nx²▼2ndTBLSETwindow▼▼▶enter

  2. Show the table, type 7 and press enter.

    2ndTABLEgraph7enter
Result of the example "Ask for your own x values" The display shows: X | Y1 / 7 | 49 / | / | / | / | / | / X=.
You should see7 | 49
Example 11.7

Jump the table to an x value

  1. With Indpnt on AUTO, show the table and type 10, enter. The table now starts at 10.

    y=X,T,θ,n▼2ndTABLEgraph10enter
Result of the example "Jump the table to an x value" The display shows: X | Y1 / 10 | 10 / 11 | 11 / 12 | 12 / 13 | 13 / 14 | 14 / 15 | 15 / X=11.
You should see10 | 10

TI-84 Plus CE is a trademark of Texas Instruments Incorporated. Trident Calculator is an independent product by South View Studios and is not affiliated with, sponsored by or endorsed by Texas Instruments. The name is used only to describe the kind of calculator this model resembles; Trident's names, keys, display, fonts and software are its own clean-room design.