330 Appendix B: Reference Information
73B-ENG.DOC Appx B Reference Information, English Julie Hewlett Revised: 07/14/98 3:58 PM Printed:
05/19/99 9:04 AM Page 330 of 20
Equation Operating System (EOS
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The Equation Operating System (EOS) defines the order in
which functions and expressions are entered and evaluated on
the TIN73. Within a priority level, EOS evaluates functions from
left to right and in the following order.
1 Calculations within parentheses.
2 Single-argument functions that precede the argument,
such as (, sin(, or log(.
Multi-argument functions, such as min(2,3), are
evaluated as they are encountered.
3 Functions that are entered after the argument, such as !,
¡, r, and conversions.
4 Powers and roots, such as 25 or 532.
5 Permutations (nPr) and combinations (nCr).
6 Multiplication, implied multiplication, and division.
7 Addition and subtraction.
8 Relational functions, such as > or {.
9 Logic operator and.
10 Logic operator or.