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128
Section 11: Calculating With Complex Numbers
Re
T
a
Z
c
Y
e
X
7
Keys:
Entering a Real Number
You have already seen two ways of entering a complex number. There is a
shorter way to enter a real number: simply key it (or recall it) into the
display just as you would if the calculator were not in Complex mode. As
you do so, a zero will be placed in the imaginary X-register (as long as the
previous operation was not − or `, as explained on page 124).
The operation of the real and imaginary stacks during this process is
illustrated below. (Assume the last key pressed was not − or ` and
the contents remain from the previous example.)
Re
T
a
Z
c
Y
e
X
17
Keys:
Im
Re
b
a
d
c
f
e
8
0
−
Im
Re
b
c
d
e
f
17
144
4
4
Im
Re
b
a
d
c
f
e
8
9
9
Im
Re
d
e
f
17
144
4
0
4
v
Im
Re
b
a
d
c
f
e
8
17
| x
Im
f
144
0
0
(Followed by
another number.)
Im
b
d
f
144
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