Equation Operating System (EOS™)
The TI-84 Evo uses an order of operations system called Equation Operating System (EOS™).
The TI-84 Evo uses the following order of operations:
Parenthesis and Grouping Symbols
Exponentiation and Roots
Negation
Multiplication, Division and Fractions
Addition and Subtraction
EOS™ evaluates the functions in an expression in this order:
|
Order |
Operation |
|
1st |
Expression inside parentheses |
|
2nd |
Functions that need a ")" and precede the argument, such as sin, log, R<>P menu items, ... Note:This is to indicate "real" functions rather than commands. |
|
3rd |
Postfix operators 2 (SQUARE) ! (FACTORIAL) T (TRANSPOSE) -1 (INVERSE) ° (DEGREE) r (RADIAN) g (GRAD) |
|
4th |
Exponentiation ( ^ ) and roots ( x√ ) In Classic Mode, exponentiation using the (^) key is evaluated from left to right. The expression 2^3^2 is evaluated as (2^3)^2, with the result of 64. In MathPrint™ mode, exponentiation using the (^) key is evaluated as 2^(3^2), with the result of 512. |
|
5th |
Negation "−" Note: Unary prefix operators (currently only (-)) are special: In an expression like "A ^ (-)B" the negation must take precedence over exponentiation, while in an expression like "(-)A ^ B" negation has lower priority than exponentiation. This is how both CE and Evo work. |
|
6th |
Permutations "nPr" and combinations "nCr" |
|
7th |
Multiplication, implied multiplication, division, fractions |
|
8th |
Addition and subtraction |
|
9th |
=, <, >, ... |
|
10th |
and |
|
11th |
or, xor |
|
12th |
End of the line operators: >f<>d >DMS and new angle display conversions >POLAR >RECT >n/d<>Un/d Unit conversions in the Science Tools App ONLY |
|
13th |
z |
|
14th |
=and":"completes all operations and closes all open parentheses |