Texas Instruments TI-84 Equation Operating System (EOS) Equation Operating System (EOS)Equation Operating System (EOS), Equation Operating System (EOS)

Chapter 1: Operating the TI-84 Plus Silver Edition 40
• Press  ~ to display the VARS Y-VARS menu.
2. Select the type of variable, such as 2:Zoom from the VARS menu or 3:Polar from the
VARSY-VARS menu. A secondary menu is displayed.
3. If you selected 1:Window, 2:Zoom, or 5:Statistics from the VARS menu, you can press
~ or | to display other secondary menus.
4. Select a variable name from the menu. It is pasted to the cursor location.
Equation Operating System (EOS™)
Equation Operating System (EOS™)Equation Operating System (EOS™)
Equation Operating System (EOS™)
Order of Evaluation
Order of EvaluationOrder of Evaluation
Order of Evaluation
The Equation Operating System (EOS) defines the order in which functions in
expressions are entered and evaluated on the TI-84 Plus. EOS lets you enter numbers
and functions in a simple, straightforward sequence.
EOS evaluates the functions in an expression in this order.
Order Number Function
1Functions that precede the argument, such as ‡(, sin(, or log(
2Functions that are entered after the argument, such as 2, M1, !, ¡, r, and
conversions
3Powers and roots, such as 2^5 or 5x‡32
4 Permutations (nPr) and combinations (nCr)
5 Multiplication, implied multiplication, and division
6 Addition and subtraction