Sharp EL-9900 - 3. STAT menus

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
a
, 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