Casio FX-CG10, User Manual

Page: 85 / 608

2-36
Press
K
3
(COMPLEX) to display the complex calculation number menu, which contains
the following items.
• {
i
} ... {imaginary unit
i
input}
• { Abs } / { Arg } ... obtains {absolute value}/{argument}
• { Conjg } ... {obtains conjugate}
• { ReP } / { ImP } ... {real}/{imaginary} part extraction
• {
' r
∠
} / {
' a
+
bi
} ... converts the result to {polar}/{rectangular} form
• You can also use
!
a
(
i
) in place of
K
3
(COMPLEX)
1
(
i
).
• Solutions obtained by the Real,
a
+
b i
and
r
∠
modes are different for power root (
x
'
)
calculations when
x
< 0 and
y
=
m
/
n
when
n
is an odd number.
Example: 3
x
'
(– 8) = – 2 (Real)
= 1 + 1.732050808
i
(
a
+
b i
)
= 2
∠
60 (
r
∠
, Deg mode)
• To input the “
∠
” operator into the polar coordinate expression (
r
∠
), press
!v
(
∠
).
k
Arithmetic Operations
[OPTN] - [COMPLEX] - [
i
]
Arithmetic operations are the same as those you use for manual calculations. You can even
use parentheses and memory.
Example (1 + 2
i
) + (2 + 3
i
)
A
K
3
(COMPLEX)
(b+c
1
(
i
)
)
+(c+d
1
(
i
)
)
w
k
Reciprocals, Square Roots, and Squares
Example (3 +
i
)
A
K
3
(COMPLEX)
!x
(
'
)
(d+
1
(
i
)
)
w