132 Section 11: Calculating With Complex Numbers
Conditional Tests
For programming, the four conditional tests below will work in the complex
sense:
~
and
T
0 compare the
complex
number in the (real and
imaginary) X-registers to 0 + 0
i
, while
T
5 and
T
6 compare the
complex
numbers in the (real and imaginary) X- and Y-registers. All other
conditional tests besides those listed below ignore the imaginary stack.
~
T
0
(x ≠ 0)
T
5
(x = y)
T
6
(x ≠ y)
Example: Complex Arithmetic.
The characteristic impedance of a ladder
network is given by an equation of the form
B
A
Z
0
,
where
A
and
B
are complex numbers. Find
Z
0
for the hypothetical values
A =
1.2 + 4.7
i
and
B =
2.7 + 3.2
i.
Keystrokes
Display
1.2
v
4.7
´
V
1.2000
Enters
A
into real and
imaginary X-registers.
2.7
v
3.2
´
V
2.7000
Enters
B
into real and
imaginary X-registers,
moving
A
into real and
imaginary Y-registers.
÷
1.0428
Calculates
A/B.
¤
1.0491
Calculates
Z
0
and
displays real part.
´
%
(hold)
0.2406
Displays imaginary part
of
Z
0
while
%
is held
down.
(release)
1.0491
Again displays real part
of
Z
0
.
Summary of Contents for HP-15C
Page 1: ...HP 15C Owner s Handbook HP Part Number 00015 90001 Edition 2 4 Sep 2011 ...
Page 17: ...Part l HP 15C Fundamentals ...
Page 64: ......
Page 65: ...Part ll HP 15C Programming ...
Page 118: ...118 ...
