Sharp el-9900c Mode D’Emploi
242
Appendix
ln x
log x
e
x
10
x
x
-1
x
2
x
n!
a
b
(^)
b
a
nPr
nCr
dec
bin
oct
hex
Function
Calculation range
Notes
ln x = log
e
x
e
.=. 2.71828...
x
≠ 0
n is an integer or
integer
+
0.5
a
b
= 10
b·log a
b
a
= 10
1
a
a
log b
n and r are positive
integers
x is an integer
1
×
10
-99
≤ x < 1
×
10
100
-
1
×
10
100
< x
≤ 230.2585092
-
1
×
10
100
< x < 100
|x| < 1
×
10
100
|x| < 1
×
10
50
0
≤ x < 1
×
10
100
-
0.5
≤ n ≤ 69.5
When a > 0:
-
1
×
10
100
< b log a < 100
When a = 0:
0 < b < 1
×
10
100
When a < 0:
b is an integer, or
1
b
b
is an odd number (b
≠ 0)
However,
-
1
×
10
100
< b log |a| < 100
When b > 0:
-
1
×
10
100
<
1
a
a
log b < 100, a
≠ 0
When b = 0:
0 < a < 1
×
10
100
When b < 0:
a is an odd number, or
1
a
a
is an integer (a
≠ 0)
However,
-
1
×
10
100
<
1
a
a
log |b| < 100
0
≤ r ≤ n ≤ 69
Decimal:
|x|
≤ 9999999999
Binary:
1000000000000000
≤ x
≤ 1111111111111111
0
≤ x ≤ 0111111111111111
Octal:
4000000000
≤ x ≤ 7777777777
0
≤ x ≤ 3777777777
Hexadecimal: FDABF41C01
≤ x ≤ FFFFFFFFFF
0
≤ x ≤ 2540BE3FF