Sharp el-9950

241
Appendix
6. Calculation Range
1. Arithmetic calculation
The results for dividend, multiplicand and operand are:
-
1
×
10
100
<x
≤
-
1
×
10
-
99
, 1
×
10
-
99
<x
≤
1
×
10
100
or x = 0
(valid within the range of display capability)
Note: Calculationresultsandinputvalueslessthan1
×
10
-
99
are
considered equal to 0.
2. Function calculation
Calculation accuracy
In principle, calculation errors are ±1 of the last digit. (In case of exponential
display, the calculation errors are ±1 of the last digit of the mantissa display.)
However, a calculation error increases in continuous calculations due to
accumulation of each calculation error. (This is the same for a
b
,
b
, n!,
e
x
, In, etc.
where continuous calculations are performed internally.)
Additionally, a calculation error will accumulate and become larger in the vicinity
of inflection points and singular points of functions. (for example, calculating
sinh X or tanh X at X = 0)
Function Calculationrange Notes
sin x
cos x
tan x
sin
-
1
x
cos
-
1
x
tan
-
1
x
sinh x
cosh x
tanh x
sinh
-
1
x
cosh
-
1
x
tanh
-
1
x
DEG :|x|<1
×
10
10
RAD :|x|<
π
180
×
10
10
GRAD :|x|<
10
9
×
10
10
However,thefollowingareexcludedfortanx
DEG :|x|=90(2n
–
1)
RAD :|x|=
π
2
(2n
–
1)
GRAD :|x|=100(2n
–
1)
-
1
≤
x
≤
1
|x|<1
×
10
100
-
230.2585093
≤
x
≤
230.2585092
|x|<1
×
10
50
1
≤
x
≤
1
×
10
50
|x|<1
“n”isaninteger