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Table
tblStart
@tbl
Data/Matrix
c1–c99
sysData*
Miscellaneous
main
ok
Solver
eqn*
exp*
EOS (Equation Operating System) Hierarchy
This section describes the Equation Operating System (EOSé) that is used by the TI-89
Titanium / Voyage™ 200. Numbers, variables, and functions are entered in a simple,
straightforward sequence. EOS evaluates expressions and equations using
parenthetical grouping and according to the priorities described below.
Order of Evaluation
Leve
Operator
l
1
Parentheses ( ), brackets [ ], braces { }
2
Indirection (#)
3
Function calls
4
Post operators: degrees-minutes-seconds (°,',"), factorial (!),
percentage (%), radian (
5
Exponentiation, power operator (^)
Negation (ë)
6
7
String concatenation (&)
8
Multiplication (ù), division (/)
Addition (+), subtraction (ì)
9
Equality relations: equal (=), not equal (ă or /=),
10
less than (<), less than or equal ({ or <=), greater than (>),
greater than or equal (| or >=)
11
Logical not
Logical and
12
Logical or, exclusive logical xor
13
Appendix B: Technical Reference
tblInput
errornum
ô
), subscript ([ ]), transpose (
î
)
934
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