Kabsolute Value And Argument Calculation; Krectangular Form ↔ Polar Form Display - Casio fx-100AU User Manual

• You can use the replay function in the CMPLX Mode.
Since complex numbers are stored in replay memory in
the CMPLX Mode, however, more memory than normal
is used up.
• Example: (2 3
(Real part 6)
(Imaginary part 8
k Absolute Value and Argument
Calculation
Supposing the imaginary number expressed by the
rectangular form
Gaussian plane, you can determine the absolute value (
and argument ( ) of the complex number. The polar form
r
is .
• Example 1: To determine the absolute value (
argument ( ) of 3+4
Imaginary axis
r
( 5 )
53.13010235 °)
(
• The complex number can also be input using the polar
r
form .
• Example 2: 2
k Rectangular Form ↔ Polar Form
Display
You can use the operation described below to convert a
rectangular form complex number to its polar form, and a
polar form complex number to its rectangular form. Press
i
) (4 5
i
)
z a bi
= +
i
(Angle unit: Deg)
45 1
(Angle unit: Deg)
– 31 –
i i
) 6 8
+ i +
2 3
is represented as a point in the
r
( = 5 ,
Real axis
A A R
A a R
i
L
+ i =
4 5
A r
r
) and
= 53.13010235 °)
i T =
+
3 4
i T =
+
3 4
A Q
2
A r
r
)
=
45