HP HP-10C

Function Key Index 109
number in display (X-
register) (Page 36).
Y Raises number in
Y-register to power of
number in display (X-
register) enter y, then
x) (Page 38).
Mathematics
-+*÷
Arithmetic operators
(Page 7).
¤ Computes square
root of number in
display (X-register)
(Page 34).
x Computes square
of number in display
(X-register) (Page
34).
! Calculates n
factorial (n!) (Page
34).
⁄ Computes
reciprocal of number
in display (X-register)
(Page 34).
$ Places value of π
(3.141592654) in
display (X-register)
(Page 33).
÷ Percent.
Computes x% of
value in the Y-
register (Page 37).
Number Alteration
‘ Leaves only
integer portion of
number in display (X-
register) by truncating
fractional portion
(Page 33).
q Leaves only
fractional portion of
number in display (X-
register) by truncating
integer portion (Page
33).
Prefix Keys
´ Pressed before a
function key, selects
gold function printed
above that key (Page
12).
CLEAR u
Cancels the ´
prefix keystroke and
partially entered
instructions such as:
´ i. Also
displays 10-digit
mantissa of number in
display (X-register)
(Pages 13 and 52).
For other prefix keys,
refer to listings under
Display Control,
Storage, and t (in
Programming Key
Index).
Stack Manipulation
® Exchanges
contents of X- and Y-
stack registers (Page
22)
) Rolls down
contents of stack
(Page 22).
` Clears contents
of display (X-register)
to zero (Page 14).
Statistics
z Accumulates
statistics of numbers
from X- and Y-
registers in storage
registers R
0
through
R
5
(Page 39).
w Subtracts
statistics of numbers
in X- and Y-registers
from storage registers
R
0
through R
5
for
correcting z
accumulations (Page
42).
’ Computes mean
(average) of x- and y-
values accumulated
by z (Page 43).
S Computes
sample standard
deviations of x- and y-
values accumulated
by z. (Page 43).
j ª Linear
estimate and
correlation coefficient.
Computes estimated
value of y (ŷ) for a
given value of x, or
estimated value of x
( x
ˆ
) for a given value
of y, by least squares