WP WP-34S, Owner'S Manual

Page: 63 / 103

WP 34S Owner‘s Manual
Edition 2.2 Page 63 of 103
Name Keys to press in modes Remarks
Γ

Γ

DECM Returns
Γ(
x ) . Additionally,

calls
 
1
 
x
.
 Γ 
ΓDAYS
 … 
DECM
Assumes
X
and
Y
containing dates in the format
chosen and calculates the number of days be-
tween them. Works like in
HP-12C .
Δ% 
DECM
Returns
y
y x


100 like %CH in HP-42S .




DECM
Calculates the scattering factors (or geometric
standard deviations) for lognormally distributed
data
 
 
1
ln 2 ln
) ln(
2

 


n
y n y
G
y

and
) ln(
x

and pushes them on the stack. This

works for the geometric mean
x g in analogy to
s for the arithmetic mean
x but multiplicative.

m


m

DECM
Works like

but pushes the scattering factors of
the geometric means
n
m
1
 

on the stack.

p


p

DECM
Works like

but with a denominator n instead of
n
– 1
, returning the scattering factors of the
populations.
– Streichkandidaten. Zusatzab-
schnitt über lognv Daten vorne einfügen.
δ

δ

DECM
Returns
Riemann‘s Zeta function for real argu-
ments, with
 




1
1
n
x
n
x

for
x
> 1 and its
analytical continuation for
x
< 1 :
     
x x x x
x x
    








1 1
2
sin 2
1


 
.
π  
DECM
Complex version copies

in X and clears Y .
Π

label DECM
Computes a product with the routine specified by
label . Initially, X contains the loop control num-
ber in the format
cccccc.fffii
and the
product is set to 1. Each run through the routine
specified computes a factor. At its end, this fac-
tor is multiplied with said product; the operation
then decrements
ccccccc
by
ii
and runs
said routine again if then
ccccccc ≥ fff
,
else returns the resulting product in X .