Casio fx-115ES, fx-991ES k 'Form Calculation Range, Setting, for 'Form, Angle Unit, Input Value Range, Angle Value Input, Calculation Result, Example 2: sin (60)

Example 2: sin (60) =		'3			(Angle Unit: Deg)
	2
MATH					Math
		s60=
Example 3: sin–1(0.5) =			1	π
					(Angle Unit: Rad)
	6
MATH					Math
	1s(sin–1)0.5=

•The following are the calculations for which ' form (form that includes ' within irrational number display) results can be displayed.

a.Arithmetic calculations of values with square root symbol ('), x2, x3, x–1

b.Trigonometric function calculations

c.Complex number Abs calculations

d.CMPLX Mode polar coordinate display (r ∠ θ )

The following are the input value ranges for which 'form is always used for display of trigonometric calculation results.

Angle Unit				Input Value Range
	Angle Value Input			for 'Form
Setting
				Calculation Result
Deg	Units of 15°			￿x￿ < 9 ⋅ 109
Rad	Multiples of	1	π radians	￿x￿ < 20π
		12
Gra	Multiples of	50	grads	￿x￿ < 10000
		3

Calculation results may be displayed in decimal form for input values outside of the above ranges.

k 'Form Calculation Range

Note

When performing complex number calculations in the CMPLX Mode, the following conditions apply respectively to both the real part and the imaginary part.

Results that include square root symbols can have up to two terms (an integer term is also counted as a term).

'form calculation results use display formats like those shown

below.

± a'b , ± d ± a'b, ± a'b ± d'e

c f

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