Casio fx-991ZA Plus - Page 46

EN-45
sin
–1
x
0  |x|  1
cos
–1
x
tan
–1
x
0  |x|  9.999999999 × 10
99
sinhx
0  |x|  230.2585092
cosh
x
sinh
–1
x
0  |x|  4.999999999 × 10
99
cosh
–1
x
1  x  4.999999999 × 10
99
tanhx
0  |x|  9.999999999 × 10
99
tanh
–1
x
0  |x|  9.999999999 × 10
–1
logx/lnx
0  x  9.999999999 × 10
99
10
x
–9.999999999 × 10
99
 x  99.99999999
e
x
–9.999999999 × 10
99
 x  230.2585092
'
x
0  x  1 × 10
100
x
2
|x|  1 × 10
50
x
–1
|x|  1 × 10
100
; x ≠ 0
3
'x
|x|  1 × 10
100
x!
0 
x  69 (x is an integer)
nPr
0 
n  1 × 10
10
, 0  r  n (n, r are integers)
1  {n!/(n–r)!}  1 × 10
100
nCr
0 
n  1 × 10
10
, 0  r  n (n, r are integers)
1  n!/r!  1 × 10
100
or 1  n!/(n–r)!  1 × 10
100
Pol(x, y)
|x|, |y|  9.999999999 × 10
99
x
2
+
y
2
 9.999999999 × 10
99
Rec(r, )
0 
r  9.999999999 × 10
99
: Same as sinx
°’ ”
|
a|, b, c  1 × 10
100
; 0  b, c
The display seconds value is subject to an error of 앧1 at
the second decimal place.
|x|  1 × 10
100
Decimal ↔ Sexagesimal Conversions
0°0´0˝  |x|  9999999°59´59˝
x
y
x  0: –1 × 10
100
 ylogx  100
x = 0: y  0
x  0: y = n,
m
2
n
+1
(m, n are integers)
When x is a complex number: |y|  1 × 10
10
(y is an
integer)
However: –1 × 10
100
 ylog |x|  100
x
'y
y
 0: x ≠ 0, –1 × 10
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 × 10
100
 1/x log |y|  100