Complex Number Calculations - Casio FX-7400GII - SOFTWARE VERSION 2-00 User Manual

Software version 2.00
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6. Complex Number Calculations

You can perform addition, subtraction, multiplication, division, parentheses calculations,
function calculations, and memory calculations with complex numbers just as you do with the
manual calculations described on pages 2-1 to 2-14.
You can select the complex number calculation mode by changing the Complex Mode item on
the Setup screen to one of the following settings.
• {Real} ... Calculation in the real number range only*
a
bi
• {
+
} ... Performs complex number calculation and displays results in rectangular form
r
• {
} ... Performs complex number calculation and displays results in polar form*
*
1
When there is an imaginary number in the argument, however, complex number calculation
is performed and the result is displayed using rectangular form.
Examples:
i
ln 2
i
ln 2
+ ln (– 2) = (Non-Real ERROR)
*
2
The display range of
screen.
• Deg ... –180 <
• Rad ... –
<
• Gra ... –200 <
Press
(CPLX) (
number menu, which contains the following items.
i
• {
} ... {imaginary unit
• {Abs}/{Arg} ... obtains {absolute value}/{argument}
• {Conj} ... {obtains conjugate}
• {ReP}/{ImP} ... {real}/{imaginary} part extraction
r
a
bi
• {
}/{
+
• You can also use
i
(
).
• Solutions obtained by the Real,
calculations when
x
Example: 3
• To input the "
= 0.6931471806 + 1.570796327
depends on the angle unit set for the Angle item on the Setup
180
200
(CPLX) on the fx-7400G
i
input}
} ... converts the result to {polar}/{rectangular} form
i
(
) in place of
a
bi
+
x
y
m
n
< 0 and
=
/
when
(– 8) = – 2 (Real)
= 1 + 1.732050808
r
= 2 60 (
)
" operator into the polar coordinate expression (
1
i
II
) to display the complex calculation
(CPLX) (
r
and
modes are different for power root (
n
is an odd number.
i
a
bi
(
+
)
2-30
2
(CPLX) on the fx-7400G
y
x
)
r
), press
II
)
( ).

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