E-25
tanx
DEG
Same as sin
x, except when \x\ = (2n–1) s90.
RAD
Same as sin
x, except when \x\ = (2n–1) sP/2.
GRA
Same as sin
x, except when \x\ = (2n–1) s100.
Asn 
x
0  \x\ 1
Acs 
x
Atn x
0  \x\ 9.999999999 s10
99
logx/lnx
0  x 9.999999999 s10
99
10
x
–9.999999999 s10
99
  x  99.99999999
e
x
–9.999999999 s10
99
  x  230.2585092
'
x
0  x  1 s10
100
x
2
\x\ 1 s10
50
x 
–1
\x\ 1 s10
100
 ; x & 0
3
'
x
\x\ 1 s10
100
x!
0  
x  69 (x is an integer)
Pol(
x, y)
\x\, \y\ 9.999999999 s10
99
x
2
 
+
 
y
2
 9.999999999 s10
99
Rec(r, θ)
0  r 9.999999999 s10
99
θ: Same as sinx
°’ ”
\
a\, b, c  1 s10
100
; 0  b, c
The display seconds value is subject to an error of ±1 at 
the second decimal place.
\x\1 s10
100
Decimal j Sexagesimal Conversions
0°0´ 0˝  \x\ 9999999°59´ 59˝
x
y
x0: –1 s10
100
 ylogx 100
x= 0: y 0
x 0: y = n, 
m
2
n
+1
 (m, n are integers)
However: –1 s10
100
 ylog \x\100
x
'
y
y0: x & 0, –1 s10
100 
1/x logy 100
y= 0: x 0
y 0: x = 2n+1, 
2
n
+1
m
 (m & 0; m, n are integers)
However: –1 s10
100
 1/x log \y\100
d / c
Total of numerator, and denominator must be 10 digits or 
less (including division marks).
RanInt#(
a, b)
a b; 
\
a
\
, 
\
b
\
1 s10
10
; b – a 1 s10
10
• Precision is basically the same as that described under “Calculation Range 
and Precision”, above. 
• 
x
y
, 
x
'
y
, 
3
, x! type functions require consecutive internal calculation, which 
can cause accumulation of errors that occur with each calculation. 
•  Error is cumulative and tends to be large in the vicinity of a function’s singular 
point and inflection point.
• 
The range for calculation results that can be displayed in P form when using 
Natural Display is |
x|  10
6
. Note, however, that internal calculation error 
can make it impossible to display some calculation results in P form. It also 
can cause calculation results that should be in decimal form to appear in P 
form.