280
APPENDIX
Function
Calculation range
Notes
n > 0
|
Σ
x| < 1
×
10
50
|
(Σ
x) (
Σ
y)| < 1
×
10
100
0 < |
Σ
x
2
–
| < 1
×
10
100
b
|
Σ
xy –
| < 1
×
10
100
< 1
×
10
100
a
|bx| < 1
×
10
100
|y – bx| < 1
×
10
100
y’
|bx| < 1
×
10
100
|a + bx| < 1
×
10
100
x’
|y – a| < 1
×
10
100
|
| < 1
×
10
100
Regression calcula-
tions excluding 2nd,
3rd and 4th degree
polynomials.
Same as above.
Same as b for other.
In principle, the residual for calculations is ±1 of the last digit (in case of exponential
display, the residual is ±1 of the last digit of the mantissa display).
However, the residual increases in continuous calculations due to accumulation of each
residual (this is the same for squares (a
b
) and square roots (
) where continuous
calculations are performed internally).
Moreover, errors will accumulate and become larger in the vicinity of inflection points
and singular points of functions.
EL-9650-Appendix (265-281)
8/3/00, 5:06 PM
280
Summary of Contents for EL-9650
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