274 Function Summary and Index
H [,
H \,
H ] Compute
inverse hyperbolic sine,
inverse hyperbolic
cosine, or inverse
hyperbolic tangent,
respectively (page 28).
Index Register
Control
V Index register (R
I
).
Storage register for:
indirect program
execution—branching
with t and G,
looping with I and
s—indirect flag
control, and indirect
display format control
(page 107). Also used to
enter complex numbers
and activate Complex
mode (page 121).
% Indirect operations.
Used to address another
storage register through
R
I
for purposes of
storage, recall, storage,
arithmetic, and program
loop control (page 107).
Also used with m to
allocate storage
registers (page 215).
Logarithmic and
Exponential
Functions
N
Computes natural
logarithm (page 28).
' Natural
antilogarithm. Raises e
to power of number in
display (X-register)
(page 28).
o Computes
common logarithm
(base 10) (page 28).
@ Common
antilogarithm. Raises 10
to power of number in
display (X-register)
(page 28).
y Raises number in
Y-register to power of
number in display
(X-register) (enter y,
then x). Causes the
stack to drop (page 29).
Mathematics
-+*÷
Arithmetic operators;
cause the stack to drop
(page 29).
¤ Computes square
root x (page 25).
x Computes
the square of x
(page 25).
! Calculates the
factorial (n!) of x or
Gamma function (Γ) of
(1 + x) (page 25).
⁄ Computes reciprocal
(page 25). (For matrix
use, refer to Matrix
Functions, page 275.)
$ Places value of π
in
display (page 24).
_ Solves for real
root of a function f (x),
with the expression for
f (x) defined by the user
in a labeled subroutine
(page 180).
f Integrate. Computes
the definite integral of
f (x), with the expression
f (x) defined by the user
in a labeled subroutine
(page 194).
Matrix Functions
m Dimensions a
matrix of a given name
{A to E, V}
(page 141).