Menu keys

Y=

This key takes you to the function entry screen. You may enter up to 10 functions. You may turn functions on/off by left cursoring over the = sign and entering.

For example: This screen shows Y1 turned off and Y2 turned on. Only Y2 would graph when you pressed the "GRAPH" button.

WINDOW

This window lets you sett the window and scale parameters. The following may be modified.

Xmin: The x-value at the left corner of the screen.

Xmax: The x-value at the right corner of the screen.

Ymin: The y-value at the bottom of the screen.

Ymax:The y-value at the top of the screen.

Xscl: The distance between each tick on the x-axis.

Yscl: The distance between each tick on the y-axis.

ZOOM

  1. This key allows you to change the window coordinates by theme without entering values using the windows button.
  2. Zbox: Allows you to draw a box to define a window.
  3. Zoom In: Zooms in on the cursor.
  4. Zoom Out: Zooms out as though you stepped back to get a wider view.
  5. Zdecimal: Gives a window such that your target x-increment is 0.1.
  6. Zsquare: Gives a square (mxm) window. Makes a circle look like a circle.
  7. Zstandard: A 10x10 window centered at (0,0).
  8. Ztrig: Sets window for an Xscl of pi/2.
  9. Zinteger: Sets x-increment in trace to 1 as standard a window as possible.
  10. ZoomStat: Uses lists to set window.


    11. TRACE

    This key allows you to trace (get the x and y values along the graph) using the arrow keys.

    GRAPH

    Graph the chosen functions in the current window.

    Other keys:

    X,T,O We will use this key to enter an x-variable into a function.

    LINK ( 2nd X,T,O )

    STAT We will use STAT|LIST to look at gathered data. We will use STAT|CALC|QUADREG to do quadratic regression.

    STAT ( 2nd Y= ) STAT|PLOT is used to make statistical plots. This will be looked at in

    PLOT another tutorial.

    PRGM We will use the PRGM key to run programs.
     
     

    Clearing the memory on the TI-83+

  11. Press 2nd then +. (MEM)
  12. Press 7
  13. Cursor right until ALL is highlighted
  14. Press Enter.
  15. Choose Reset (2)
  16. You should see the message "Resetting All".