Sharp EL-9900 - Manual (Page 251)

241
Appendix
6. Calculation Range
1. Arithmetic calculation
The results for dividend, multiplicand and operand are:
- 1
×
10 100 < x
≤ - 1
Ч
10 - 99 , 1
Ч
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