Citizen Systems SR-260N manual Correction, Accuracy and Capacity, Functions Input range

6) x y, y x

7)nPr, nCr

8)x , ⎟

9)+, –

Correction

If you have made a mistake when entering a number (but you have not yet pressed an arithmetic operator key), just press [ CE ] to clear the last entry then input it again, or delete individual digits by using the backspace key [ 00Æ0 ].

(Ex.) : Correct 12385 as 789

Step: Press [ CE ] 789

(Ex.) : Correct 12385 as 123

DEG

7 8 9.

Step: Press [ 00Æ0 ] twice

DEG

1 2 3.

In a series of calculations, you can correct errors in immediate results by pressing [ON/C] to clear the calculation completely (expect clearing memory, see page 9).

If you press the wrong arithmetic operation key, just press [ CE ] key before entering anything else.

Accuracy and Capacity

Accuracy : ±1 in 10th digit.

Capacity :

In general, every reasonable calculation is displayed up to 10 digit mantissa, or 10-digit mantissa plus 2-digit exponent up to 10±99 or integers between −9999999999 and 9999999999.

Numbers used as input must be within the range of the given function. The range for each of the calculator’s functions is given in the following pages.

Functions		Input range
sin x, cos x, tan x	Deg : x < 4.5 x 10 10deg
	Rad : x < 2.5 x 10 8 π rad
	Grad : x < 5 x 10 10 grad
	however, for tan x
	Deg : x ≠ 90 (2n+1)
	π
	Rad : x ≠ 2	(2n+1)
	Grad : x ≠ 100 (2n+1)
	(n is an integer)
sin –1x, cos –1x	x ≤ 1
	E5
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