Trident HelpOpen the calculator

Precalculus

Set the graph window

Choose the x and y ranges that the graph screen shows.

Open in Trident

The window is the part of the plane you can see. Xmin and Xmax are the left and right edges. Ymin and Ymax are the bottom and top. The scale numbers set the spacing of the tick marks.

Here the window is changed to x from -5 to 5 and y from -6 to 6, which shows y = x² − 4 nicely.

Classic Graphing 84

Start on the main screen: Press 2nd then mode (QUIT) to get back to the home screen. Pressing clear on a menu also backs out of it.

  1. Enter the function first: y=, then X² − 4.

    y=X,T,θ,nx²−4

  2. Press window and type each value followed by enter: Xmin -5, Xmax 5, Xscl 1, Ymin -6, Ymax 6, Yscl 2. The minus is the (−) key.

    window(−)5enter5enter1enter(−)6enter6enter2enter

  3. Press graph to draw, then window again to check the numbers.

    graphwindow

You should seeXmin=⁻5 Xmax=5 Ymin=⁻6 Ymax=6 Yscl=2

Classic Graphing 84 key reference

Natural Color Graphing

Start on the main screen: Press MENU then 1 to open Run-Matrix, the main calculation screen. Press EXIT to back out of a bar or screen, and SHIFT then EXIT (QUIT) to return to the app start.

  1. In the Graph app, enter X² − 4.

    MENU3X,θ,Tx²−4EXE

  2. Press SHIFT then F3 (V-WIN). Type Xmin, Xmax and the scale, each followed by EXE. Press down once to skip the dot row.

    SHIFTV-WINF3(−)5EXE5EXE1EXE▼

  3. Enter Ymin -6, Ymax 6 and scale 2, then EXIT.

    (−)6EXE6EXE2EXEEXIT

  4. Press F6 to draw. Open V-WIN again to check.

    F6SHIFTV-WINF3

You should seeXmin:-5 max:5 Ymin:-6

Natural Color Graphing key reference

Classic CAS

Start on the main screen: Press home to open the Home menu (Calculator, Graphs, Settings, and more). Choose Calculator, or press esc to go back to the calculation page.

  1. Enter the function on the graphs page.

    docx^2▶−4enter

  2. Open the menu and pick 1, Window Settings. Type each value and press enter: XMin -5, XMax 5, XScale 1, YMin -6, YMax 6, YScale 2.

    menu1(−)5enter5enter1enter(−)6enter6enter2enter

  3. Open Window Settings once more to check them.

    menu1

You should seeXMin=-5 XMax=5 YMin=-6 YMax=6 YScale=2

Classic CAS key reference

Tips

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