126 Section 11: Calculating With Complex Numbers
Clearing the Imaginary X-Register.
To clear the number in the imaginary
X-register, press
´
}
, then press
−
. Press
´
}
again to
return the zero, or any new number keyed in, to the imaginary X-register.
Example:
Replace -1 -8
i
by -1 + 5
i
.
Re
Im
Re
Im
Re
Im
Re
Im
Re
Im
T
a
b
a
b
a
b
a
b
a
b
Z
c
d
c
d
c
d
c
d
c
d
Y
e
f
e
f
e
f
e
f
e
f
X
-1
-8
-8
-1
0
-1
5
-1
-1
5
Keys:
}
−
5
}
(continue with
any operation)
Clearing the Real and Imaginary X-Registers.
If you want to clear or
replace
both
the real and imaginary parts of the number in the X-register,
simply press
−
, which will disable the stack, and enter your new number.
(Enter zeros if you want the X-register to contain zeros.) Alternatively, if
the new number will be purely real (including 0 + 0
i
), you can quickly clear
or replace the old, complex number by pressing
)
followed by zero or
the new, real number.
Example:
Replace -1 + 5
i
with 4 + 7
i.
Re
Im
Re
Im
Re
Im
Re
Im
Re
Im
T
a
b
a
b
c
d
c
d
c
d
Z
c
d
c
d
e
f
e
f
c
d
Y
e
f
e
f
4
5
4
5
e
f
X
-1
5
0
5
4
5
7
0
4
7
Keys:
−
4
v
7
´
V
(continue with
any operation)
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 ...
