HP -15C Advanced Functions Handbook page 93

SectionS: Calculating in Complex Mode 91
Keystrokes Display
Restores Z
Q
.
Calculates Im(P(z
0
))
(or Re(P(z
0
)) for
equipotential line.)
Stores c in R
5
.
Loop for finding y
k
.
Increments counter k in
Index register.
Recalls h.
Recalls counter k.
Calculates kh.
Recalls XQ.
Calculates x^ = x
0
+ kh.
Stores Xfr in R
6
.
Recalls y/
{
_ ± from R
3
.
Duplicates y^ _ j for
second estimate.
Searches for y^.
Branches for valid y^ root.
Starts decreasing step
size.
Decrements counter k.
Reduces h by factor of 4.
Multiplies counter by 4.
Loops back to find y^
again.
Continues finding y^.
DO EMI
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I T I l R e S l m l
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1
isToiiT|pn
|RCL|4
fRCLlfll
s
| R C L | 2
H
[stole
| R C L | 3
| ENTER |
[Til SOLVE |3
|GTO|4
1
rsroinm
4
rsfoiFi4
[sjoJES
[GT012
rniTBLi4
|RCL|6
FflfPSEl
020-
43 32
021-42,21, 1
022-
42 30
023- 3 2 1 2
024-
44 5
025-42,21, 2
026-
1
027-44,40,25
028-
45 4
029-
45 25
030-
20
031-
45 2
032-
40
033-
44 6
034-
45 3
035-
36
036-42,10, 3
037-
22 4
038-
1
039-44,30,25
040-
4
041-44,10, 4
042-44,20,25
043-
22 2
044-42,21, 4
045-
45 6
046-
42 31
iniUSERllSTOirAl 047u 4 4 1 1
Displays x
k
.
•-x
k
.