Negation – Texas Instruments TI-83 PLUS User Manual

Page 52

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TI-83 Plus

Operating the TI-83 Plus Silver Edition

49

Note: An open parenthesis following a list name, matrix name, or

Y=

function

name does not indicate implied multiplication. It specifies elements in the list
(Chapter 11) or matrix (Chapter 10) and specifies a value for which to solve the

Y=

function.

Negation

To enter a negative number, use the negation key. Press

Ì

and then

enter the number. On the

TI-83 Plus

, negation is in the third level in the

EOS hierarchy. Functions in the first level, such as squaring, are
evaluated before negation.

For example,

M

X

2

, evaluates to a negative number (or 0). Use

parentheses to square a negative number.

Note: Use the

¹

key for subtraction and the

Ì

key for negation. If you press

¹

to enter a negative number, as in

9

¯

¹

7

, or if you press

Ì

to indicate

subtraction, as in

9

Ì

7

, an error occurs. If you press

ƒ

A

Ì

ƒ

B

, it is

interpreted as implied multiplication (

A

äM

B

).

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