24 Getting Started with the TI-84 Plus C Silver Edition
Note:
Within a priority level, EOS™ evaluates functions from left to
right. Calculations within parentheses are evaluated first.
Implied Multiplication
The TI-84 Plus C recognizes implied multiplication, so you need not press
¯
to express multiplication in all cases. For example, the TI-84 Plus C
interprets
2
p
,
4sin(46)
,
5(1+2)
, and
(2
…
5)7
as implied multiplication.
Note:
TI-84 Plus C implied multiplication rules differ from those of some
other graphing calculators. For example, the TI-84 Plus C evaluates
1
à
2X
as
(1
à
2)
…
X
, while some graphing calculators may evaluate
1
à
2X
as
1
à
(2
…
X)
(Chapter 2 in the guidebook).
Parentheses
All calculations inside a pair of parentheses are completed first. For
example, in the expression
4(1+2)
, EOS™ first evaluates the portion
inside the parentheses, 1+2, and then multiplies the answer, 3, by 4.
Negation
To enter a negative number, use the negation key. Press
Ì
and then
enter the number. On the TI-84 Plus C, negation is in the third level in the
EOS™ hierarchy. Functions in the first level, such as squaring, are
evaluated before negation.
3
Powers and roots, such as
2
5
or
4
Permutations (
nPr
) and combinations (
nCr
)
5
Multiplication, implied multiplication, and
division
6
Addition and subtraction
7
Relational functions, such as > or
8
Logic operator
and
9
Logic operators
or
and
xor
Order
Number
Function
5
x
32
Summary of Contents for TI-84 Plus C
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