Sharp EL-738 operation manual Calculation ranges of functions, Function Calculation range

Calculation ranges of functions

• Within the ranges specified, this calculator is accurate to within ±1 of the least significant digit of the mantissa. However, a calculation error increases in continuous calculations due to accumulation of each calculation error. (This is the same for financial calculations, scientific calculations [yx, x , ex, ln, n!, 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.

In financial calculations, a calculation error increases if the interest is low or the number of payments is high. Press s if you’d like to cancel the calculation while the “calculating!” screen is displayed.

• 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 in the display.

Function		Calculation range
	DEG: x < 1010
		(tan x : x		90 (2n – 1))*
sin x, cos x,	RAD: x < — ⋅ 1010
		180
tan x		(tan x : x		— (2n – 1))*
		10		2
				10
	GRAD: x < — ⋅ 10
		9
		(tan x : x 100 (2n – 1))*
sin–1x, cos–1x	x	1
tan–1x	x < 10100
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 < x < 1: — = 2n – 1, x
			x
		–10100< x log y < 100

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