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
interp
rets
2p, 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
1à2X
as
(1à2)…X, while some graphing calculators may evaluate 1à2X as
1à(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™ hierar
chy. Functions in the first level, such as squar
ing, 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
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