2 performing complex number calculations – Casio fx-9750G PLUS User Manual
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4-2 Performing Complex Number Calculations
The following examples show how to perform each of the complex number
calculations available with this calculator.
k
k
k
k
k
Arithmetic Operations
[OPTN]-[CPLX]-[i]
Arithmetic operations are the same as those you use for manual calculations. You
can even use parentheses and memory.
Example 1
(1 + 2i) + (2 + 3i)
A
K3
(CPLX)
(b+c1
(
i
))
+(c+d1
(
i
))w
Example 2
(2 + i)
× (2 – i)
A
K3
(CPLX)
(c+1
(
i
))
*(c-1
(
i
))w
k
k
k
k
k
Reciprocals, Square Roots, and Squares
Example
(3 + i)
A
K3
(CPLX)
!9
(d+1
(
i
))w
k
k
k
k
k
Absolute Value and Argument
[OPTN]-[CPLX]-[Abs]/[Arg]
The unit regards a complex number in the form
a
+
bi
as a coordinate on a
Gaussian plane, and calculates absolute value Z and argument (arg).
Example
To calculate absolute value (
r
) and argument (
θ) for the
complex number 3 + 4
i
, with the angle unit set for degrees
Imaginary axis
Real axis