99APPX.DOC TI-86, Appendix, US English Bob Fedorisko Revised: 02/27/01 1:20 PM Printed: 02/27/01 1:26 PM Page 397 of 2699APPX.DOC TI-86, Appendix, US English Bob Fedorisko Revised: 02/27/01 1:20 PM Printed: 02/27/01 1:26 PM Page 397 of 26
Equation Operating System (EOS™)
The Equation Operating System (EOS) governs the order of evaluation on the TI
-
86.
Calculations within parentheses are evaluated first, and then EOS evaluates functions
within an expression in this order:
1stFunctions that are entered after the argument, such as
2
,
M
1
,
!
,
¡
,
r
, and conversions
2ndPowers and roots, such as
2^5
or
5
x
‡
32
3rdSingle-argument functions that precede the argument, such as
‡
(
,
sin(
, or
log(
4thPermutations (
nPr
) and combinations (
nCr
)
5thMultiplication, implied multiplication, and division
6thAddition and subtraction
7thRelational functions, such as
>
or
8thLogic operator
and
9thLogic operators
or
and
xor
Implied Multiplication
The TI
-
86 recognizes implied multiplication, so you need not press
M
to express
multiplication in all cases. For example, the TI
-
86 interprets
2
p
,
4sin(46)
,
5(1+2)
, and
(2
¹
5)7
as
implied multiplication.
Parentheses
All calculations inside a pair of parentheses are completed
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