Casio FX-991ES User Guide - Page 20

Form Calculation Range - complex

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Example 2: sin (60) = '3 2 MATH s60= (Angle Unit: Deg) Math Example 3: sin-1 (0.5) = 1 π 6 MATH 1s(sin-1)0.5= (Angle Unit: Rad) Math • 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 Setting Deg Rad Gra Angle Value Input Units of 15° Multiples of 1 12 π radians 50 Multiples of grads 3 Input Value Range for ' Form Calculation Result ȊxȊ < 9 × 109 ȊxȊ < 20π ȊxȊ < 10000 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 cf E-18

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E-18
Example 2:
sin (60) =
(Angle Unit: Deg)
MATH
s
60=
Math
Example 3:
sin
–1
(0.5) =
π
(Angle Unit: Rad)
MATH
1
s
(sin
–1
)
0.5=
Math
• 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 (
'
),
x
2
,
x
3
,
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
Setting
Angle Value Input
for
'
Form
Calculation Result
Deg
Units of 15
°
±
x
±
< 9
×
10
9
Rad
Multiples of
π
radians
±
x
±
< 20
π
Gra
Multiples of
grads
±
x
±
< 10000
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.
1
6
±
a
'
b
,
±
d
±
a
'
b
,
±
a
'
b
±
d
'
e
c
f
1
12
50
3
'
3
2