(12C) Complex Arithmetic

[Eddie W. Shore]

Let A and B represent the two complex numbers

A = R1 + R4*i
B = R2 + R5*i

Where i = √-1

Store real components in R1 and R2, and imaginary parts R4 and R5. Choose the arithmetic calculations:

Enter 0 for addition: A + B
Enter 1 for multiplication: A * B
Enter 2 or otherwise for division: A ÷ B

Result: C = R3 + R6*i

Program:

Code:


STEP    CODE            KEY
01    44, 0            STO 0
02    43, 35    X=0
03    43, 33, 09    GTO 09 
04    1             1
05    30             -
06    43, 35    X=0
07    43, 33, 18    GTO 18
08    43, 33, 35    GTO 35
09    45, 1            RCL 1
10    45, 2            RCL 2
11    40            +
12    44, 3            STO 3
13    45, 4            RCL 4
14    45, 5            RCL 5
15    40            +
16    44, 6            RCL 6
17    43, 33, 63    GTO 63
18    45, 1            RCL 1
19    45, 2            RCL 2
20    20            *
21    45, 4            RCL 4
22    45, 5            RCL 5
23    20            *
24    30            -
25    44, 3           STO 3
26    45, 1           RCL 1
27    45, 5           RCL 5
28    20           *
29    45, 2          RCL 2
30    45, 4          RCL 4
31    20         *
32    40         +
33    44, 6         STO 6
34    43, 33, 63    GTO 63
35    45, 2         RCL 2
36    36         ENTER
37    20         *
38    45, 5         RCL 5
39    36         ENTER
40    20         *
41    40         +
42    44, 0         STO 0
43    45, 1         RCL 1
44    45, 2         RCL 2
45    20         *
46    45, 4         RCL 4
47    45, 5         RCL 5
48    20         *
49    40         +
50    45, 0         RCL 0
51    10         ÷ 
52    44, 3         STO 3
53    45, 4         RCL 4
54    45, 2         RCL 2
55    20         *
56    45, 1         RCL 1
57    45, 5         RCL 5
58    20         *
59    30         -
60    45, 0      RCL 0
61    10        ÷ 
62    44, 6        STO 6
63    45, 3        RCL 3
64    31        R/S
65    45, 6        RCL 6
66    43, 33, 00    GTO 00

Example:
A = 4.25 + 3.16*i, B = -2.27 + 1.04*i

Option 0 (+): 1.98 + 4.20*i
Option 1 (*): -12.93 – 2.75*i
Option 2 (÷): -1.02 – 1.86*i