Sharp EL-5250, EL-5230 operation manual Technical Data, Calculation ranges

Appendix

Technical Data

Calculation ranges

•Within the ranges specified, the calculator is accurate to ±1 of the least significant digit of the mantissa. However, in continuous calculations the calculation error increases due to the accumulation of each successive calculation error. (This is the same for yx, x , n!, ex, In etc., where continuous calculations are performed internally.)

•Furthermore, the calculation error will accumulate and become larger in the vicinity of inflection points and singular points of functions, and in programmed repetitive calculations.

•Calculation ranges

±10-99to ±9.999999999 ⋅ 1099 and 0.

If the absolute value of an entry or a final or intermediate result of a calculation is less than 10-99, the value is considered to be 0 in calculations and on the display.

Function			Dynamic range
		DEG:	x < 1010
			(tan x : x =/		90 (2n–1))*
sin x, cos x,		RAD:	π	⋅ 1010
			x < —–		π
			180
tan x			(tan x : x =/		—2(2n–1))*
			10	10
		GRAD: x < —–		⋅ 10
			9		100 (2n–1))*
			(tan x : x =/
sin–1x,cos–1x		x ≤ 1
tan–1x, 3√		x < 10100
	x
In x, log x		10–99≤ x < 10100

•y > 0: –10100< x log y < 100

•y = 0: 0 < x < 10100

yx	• y < 0: x = n	1
					0)*,
	(0 < l x l < 1: — = 2n–1, x =/
		x
	–10100< x log y < 100
	• y > 0: –10100	1		=/	0)
		< — log y < 100 (x
		x
__	• y = 0: 0 < x < 10100
	• y < 0: x = 2n–1
x√ y
		1	0)*,
	(0 < x < 1 : — = n, x =/
		x
	–10100	1
		< — log y < 100
		x

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