Texas Instruments TI-83 PLUS - Manual (Page 69)

TI-83 Plus Math, Angle, and Test Operations 66
L (Negation)
M (negation, Ì ) returns the negative of value . You can use M with real or
complex numbers, expressions, lists, and matrices.
M value
EOS™ rules (Chapter 1) determine when negation is evaluated. For
example,
L A 2 returns a negative number, because squaring is evaluated
before negation. Use parentheses to square a negated number, as in
( L A)
2
.
Note: On the TI-83 Plus , the negation symbol ( M ) is shorter and higher than the
subtraction sign ( N ), which is displayed when you press ¹ .
p (Pi)
p (Pi, y B ) is stored as a constant in the TI-83 Plus . In calculations,
the TI-83 Plus uses 3.1415926535898 for p .