HP 35s Scientific Calculator - Manual (Page 144)

9-2 Operations with Complex Numbers
The Complex Stack
A complex number occupies part 1 and part 2 of a stack level. In RPN mode, the
complex number occupying part 1 and part 2 of the X-register is displayed in line 2,
while the complex number occupying part 1 and part 2 of the Y-register is
displayed in line 1.
Complex Operations
Use the complex operations as you do real operations in ALG and RPN mode.
To do an operation with one complex number:
1. Enter the complex number z as described before.
2. Select the complex function.
T
Part3
Part2
Part1
Z
Part3
Part2
Part1
Y
Part3
(Display in line 1)
X1iY1
Y 1 o r a 1 or
X 1 o r r 1 r1
θ
a1
X
P a r t 3
(Display in line 2)
X 2 i Y 2
Y 2 o r a 2 or
X 2 o r r 2 r2
θ
a2
Complex Stack Complex Result,Z