Equation Operating System (Eosé) - Texas Instruments TI-82 STATS Manual Book

Equation Operating System (EOSé)
Order of
Evaluation
1-22 Operating the TI-82 STATS
The Equation Operating System (EOSé) defines the order in
which functions in expressions are entered and evaluated on the
TI-82 STATS. EOS lets you enter numbers and functions in a
simple, straightforward sequence.
EOS evaluates the functions in an expression in this order:
1 Single-argument functions that precede the argument,
such as
‡(
2 Functions that are entered after the argument, such as
2
, , , ,
M1
!
¡
3 Powers and roots, such as
4 Permutations (
5 Multiplication, implied multiplication, and division
6 Addition and subtraction
7 Relational functions, such as
8 Logic operator
9 Logic operators
Within a priority level, EOS evaluates functions from left to
right.
Calculations within parentheses are evaluated first.
Multiargument functions, such as
as they are encountered.
, , or
sin( log(
r
, and conversions
2^5
) and combinations (
nPr
and
and
or xor
nDeriv(A
x
or
5
‡32
)
nCr
or
>

2
, are evaluated
,A,6)