HP -15C Owner's Handbook Manual page 123

Section 11: Calculating With Complex Numbers
Re Im
T 9
Z 8
Y 7
X 6
Keys:
The execution of ´ V causes the entire stack to drop, the T contents to
duplicate, and the real X contents to move to the imaginary X-register.
When the second complex number is entered, the stacks operate as shown
below. Note that v lifts both stacks.
Re
T 7
Z 7
Y 6
X 2
Keys:
T
Z
Y
X
Keys:
A second method of entering complex numbers is to enter the imaginary
part first, then use } and −. This method is illustrated under
Entering Complex Numbers With −, page 127.
Re Im
8
7
6
2
v
2
Im Re
0 7
0 6
0 2
3 4
4
Re Im
6 0
2 3
4 0
5 0
´ V
Re Im
7
6
2
2
3
Im Re
0 6
0 2
3 4
0 4
v
Re Im
6 0
6 0
2 3
4 5
+
Re Im Re
7
6
2
3
´ V
Im Re
0 6
3 2
0 4
0 5
5
Re Im
6 0
6 0
6 0
6 8
123
Im
7 0
7 0
6 0
2 3
Im
0
3
0
0