HP 35s Scientific Calculator - Manual (Page 367)

Operation Index G-15
  ( )
Given a y–value in the X–register,
returns the x–estimate based on the
regression line: = (y – b)
÷ m.
12–11 1
!  * Factorial (or gamma).
Returns (x)(x – 1) ... (2)(1), or Γ (x +
1).
4–15 1
XROOT  The argument
1
root of
argument
2
.
6–16 1
w ÕÕ ( w )Returns
weighted mean of x values: ( Σy
i
x
i
) ÷
Σy
i
.
12–4 1
  Displays the mean (arithmetic
average) menu. 12–4
x<> variable   x exchange.
Exchanges x with a variable.
3–8
x<>y  x exchange y.
Moves x to the Y–register and y to
the X–register.
2–4
  Displays the "x?y" comparison tests
menu. 14–7
x ≠y
  ( ≠)
If x ≠y, executes next program line;
if x=y, skips next program line.
14–7
x ≤y?
 Õ ( ≤)
If x ≤y, executes next program line;
if x >y, skips next program line.
14–7
x<y?  ÕÕ (<)
If x<y, executes next program line;
if x
≥y, skips next program line.
14–7
x>y?  ÕÕÕ (>)
If x>y, executes next program line;
if x
≤y, skips next program line.
14–7
x ≥y?
 ХХХХ ( ≥)
If x ≥y, executes next program line;
if x<y, skips next program line.
14–7
Name Keys and Description Page
xˆ
ˆ
xˆ
x
