K absolute value/argument calculation – Casio fx-115W User Manual
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E-24
• Example: (2 + 3
i
) + (4 + 5
i
)
Enter CMPLX Mode
F
2
R
4
+
5
i
T
=
6.
Real number part
A
r
8.
i
Imaginary number part
k Absolute Value/Argument Calculation
• The procedure described below can be used to deter-
mine the absolute value (Abs) and argument (arg) for a
complex number of the format Z =
a
+
bi
, which is pre-
sumed to exist as coordinates on a Gaussian plane.
• Example: To obtain the absolute value (
r
) and argu-
ment (θ ) for the complex number 3 + 4
i
, when DEG is
set for the angle unit mode
Imaginary number axis
Real number axis
Determine the absolute value.
A
A
R
3
+
4
i
T
=
5.
CMPLX
Determine the argument.
A
a
R
3
+
4
i
T
=
53.13010235
Formula Memory
• Formula memory lets you input a single formula in
memory, and then input values for the formula's vari-
ables to calculate results.
R
2
+
3
i
T
+