HP 35s Scientific Calculator - Manual (Page 363)

Operation Index G-11
OR 
>
()
Logic operator
11–4 1
  Turns the calculator off. 1–1
nPr  { Permutations of n items
taken r at a time. Returns n! ÷(n – r)!.
4–15 1
  Activates or cancels (toggles)
Program–entry mode. 13–6
PSE   Pause.
Halts program execution briefly to
display x, variable, or equation, then
resumes. (Used only in programs.)
13–18
13–19
r  ÕÕ () Returns the
correlation coefficient between the x–
and y–values:
12–7 1
r
θ
a 
8
()
Changes the display of complex
numbers.
1–25
RAD 9
()
Selects Radians angular mode.
4–4
RAD   Degrees to radians.
Returns (2 π/360) x.
4–13 1
RADIX , 
8
(6)
Selects the comma as the radix mark
(decimal point).
1–23
RADIX . 
8
()
Selects the period as the radix mark
(decimal point).
1–23
RANDOM   Executes the RANDOM
function. Returns a random number
in the range 0 through 1.
4–15 1
RCL variable  variable
Recall.
Copies variable into the X–register.
3–7
Name Keys and Description Page
2 2 ) ( ) (
) )( (
∑
∑
− × −
− −
y y x x
y y x x
i i
i i