Appendix B: Technical Reference
915
Level
Operator
1
Parentheses ( ), brackets [ ], braces { }
2
Indirection (#)
3
Function calls
4
Post operators: degrees-minutes-seconds (
ó
,',"), 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 (
ƒ
or /=),
less than (<), less than or equal (
c
or <=), greater than (>), greater
than or equal (
‚
or >=)
11
Logical
not
12
Logical
and
13
Logical
or
, exclusive logical
xor
14
Constraint “with” operator (|)
15
Store (
!
)
All calculations inside a pair of parentheses, brackets, or braces are
evaluated first. For example, in the expression 4(1+2), EOS first evaluates
the portion of the expression inside the parentheses, 1+2, and then
multiplies the result, 3, by 4.
The number of opening and closing parentheses, brackets, and braces
must be the same within an expression or equation. If not, an error
message is displayed that indicates the missing element. For example,
(1+2)/(3+4 will display the error message “Missing ).”
Note:
Because the TI-89 Titanium / Voyage™ 200 allows you to define your
own functions, a variable name followed by an expression in parentheses is
considered a “function call” instead of implied multiplication. For example
a(b+c) is the function a evaluated by b+c. To multiply the expression b+c by
the variable a, use explicit multiplication: a
ù
(b+c).
EOS (Equation Operating System) Hierarchy
This section describes the Equation Operating System
(EOS
é
) 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
Parentheses,
Brackets, and
Braces
Summary of Contents for Titanium TI-89
Page 9: ...Getting Started 6 TI 89 Titanium keys Ë Ì Í Ê ...
Page 34: ...Getting Started 31 2 or D 2 B u s i n e s s D B D B Press Result ...
Page 43: ...Getting Started 40 3 0 D B D D B D Press Result ...
Page 44: ...Getting Started 41 D 2 0 0 2 D B Scroll down to October and press Press Result ...
Page 58: ...Getting Started 55 Example Set split screen mode to TOP BOTTOM Press Result 3 B D ...
Page 70: ...Getting Started 67 ...
Page 175: ...Operating the Calculator 172 From the Keyboard ...
Page 456: ...Tables 453 ...
Page 527: ...Data Matrix Editor 524 ...
