1-22 Operating the TI
-
83
8301OPER.DOC TI-83 international English Bob Fedorisko Revised: 02/19/01 12:09 PM Printed: 02/19/01 1:34
PM Page 22 of 24
The Equation Operating System (EOS
é
) defines the order
in which functions in expressions are entered and
evaluated on the TI
.
83. 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
‡
(
,
sin(
, or
log(
2
Functions that are entered after the argument,
such as
2
,
M
1
,
!
,
¡
,
r
, and conversions
3
Powers and roots, such as
2^5
or
5
x
‡
32
4
Permutations (
nPr
) and combinations (
nCr
)
5
Multiplication, implied multiplication, and
division
6
Addition and subtraction
7
Relational functions, such as
>
or
8
Logic operator
and
9
Logic operators
or
and
xor
Within a priority level, EOS evaluates functions from left to
right.
Calculations within parentheses are evaluated first.
Multiargument functions, such as
nDeriv(A
2
,A,6)
, are
evaluated as they are encountered.
Equation Operating System (EOS™)
Order of
Evaluation
