Name

Keys and Description

Page

¼

 

 

 

 

OCT

{x{!}

10–1

 

 

Selects Octal (base 8) mode.

 

 

†

Turns the calculator off.

1–1

 

Pn,r

{_Permutations of n items

4–14

2

 

taken r at a time. Returns n!(n

 

 

 

r)!.

 

 

 

{e

Activates or cancels (toggles)

12–5

 

 

Program–entry mode.

 

 

PSE

fPause.

12–16

 

 

Halts program execution briefly to

12–17

 

 

display x, variable, or equation,

 

 

 

then resumes. (Used only in

 

 

 

programs.)

 

 

 

r

{T} Returns the

11–7

1

 

correlation coefficient between the

 

 

 

x– and y–values:

 

 

 

ƒ(xi x )(yi y )

 

 

 

ƒ(xi x )2 (yi y )2

 

 

RAD

Ÿ{}

4–4

 

€

Selects Radians angular mode.

 

 

wDegrees to radians.

4–13

1

RAD

 

Returns (2π/360) x.

 

 

RADIX ,

Ÿ{8}

1–18

 

 

Selects the comma as the radix

 

 

 

mark (decimal point).

 

 

RADIX .

Ÿ{)}

1–18

 

 

Selects the period as the radix

 

 

 

mark (decimal point).

 

 

RANDOM

kExecutes the

4–14

1

 

RANDOM function. Returns a

 

 

 

random number in the range 0

 

 

 

through 1.

 

 

 

 

 

 

 

 

Operation Index G–13