Appendix B: Technical Reference 942
Table
TableTable
Table
Data/Matrix
Data/MatrixData/Matrix
Data/Matrix
Miscellaneous
MiscellaneousMiscellaneous
Miscellaneous
Solver
SolverSolver
Solver
EOS (Equation Operating System) Hierarchy
EOS (Equation Operating System) HierarchyEOS (Equation Operating System) Hierarchy
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
Order of EvaluationOrder of Evaluation
Order of Evaluation
tblStart @tbl tblInput
c1–c99 sysData*
main ok errornum
eqn* exp*
Leve
l
Operator
1 Parentheses ( ), brackets [ ], braces { }
2 Indirection (#)
3 Function calls
4 Post operators: degrees-minutes-seconds (°,',"), factorial (!),
percentage (%), radian (
ô
), subscript ([ ]), transpose (
î
)
5 Exponentiation, power operator (^)
6 Negation (ë)
7 String concatenation (&)
8 Multiplication (ù), division (/)
9 Addition (+), subtraction (ì)
10 Equality relations: equal (=), not equal (ă or /=),
less than (<), less than or equal ({ or <=), greater than (>),
greater than or equal (| or >=)
11 Logical not
12 Logical and
13 Logical or, exclusive logical xor
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